The Warmfit Merino Hat is a high-performance beanie designed for medium to high-intensity activities in cold climates. Combining protection and comfort, its lower band made of Polar Stretch Grid fabric provides extra thermal insulation for the forehead and ears. The upper section, crafted from 100% merino wool, ensures natural warmth, excellent breathability, and reliable performance even in wet conditions. Its soft touch and elasticity make it a versatile and comfortable accessory, a must-have for those seeking lightweight functionality on cool days.

FAST&LIGHT -  

The Warmfit Merino Hat is a high-performance beanie designed for medium to high-intensity activities in cold climates. Combining protection and comfort, its lower band made of Polar Stretch Grid fabric provides extra thermal insulation for the forehead and ears. The upper section, crafted from 100% merino wool, ensures natural warmth, excellent breathability, and reliable performance even in wet conditions. Its soft touch and elasticity make it a versatile and comfortable accessory, a must-have for those seeking lightweight functionality on cool days.

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Outdoor technical cap that combines the trucker style aesthetics with the functionality and lightness of the OS2O technical apparel. Built with Cool2Dry® fabric in mesh and sweatband, ultra lightweight and quick-dry, it provides a cool and ventilated feeling while the nylon on the front and brim protects from the rain and wind. Thanks to its foam in the visor and front, it is extremely packable, rebounding to its original form in seconds.

A versatile cap, ideal for any outdoor activity, including high intensity ones. 

FAST&LIGHT - 48g

Outdoor technical cap that combines the trucker style aesthetics with the functionality and lightness of the OS2O technical apparel. Built with Cool2Dry® fabric in mesh and sweatband, ultra lightweight and quick-dry, it provides a cool and ventilated feeling while the nylon on the front and brim protects from the rain and wind. Thanks to its foam in the visor and front, it is extremely packable, rebounding to its original form in seconds.

A versatile cap, ideal for any outdoor activity, including high intensity ones. 

FAST&LIGHT - 48g

Outdoor technical cap that combines the trucker style aesthetics with the functionality and lightness of the OS2O technical apparel. Built with Cool2Dry® fabric in mesh and sweatband, ultra lightweight and quick-dry, it provides a cool and ventilated feeling while the nylon on the front and brim protects from the rain and wind. Thanks to its foam in the visor and front, it is extremely packable, rebounding to its original form in seconds.

A versatile cap, ideal for any outdoor activity, including high intensity ones. 

FAST&LIGHT - 48g

Merino wool toe socks designed to offer maximum comfort and performance for your outdoor adventures. Made with a blend of merino wool, nylon, and spandex, these socks provide a soft and warm feel, along with excellent moisture management. Merino wool ensures superb temperature control, keeping your feet cool in warm climates and warm in cold weather, along with natural odor resistance, ideal for long days of activity. The anatomical toe design enhances mobility and reduces friction between toes, preventing blisters and chafing. The high cuff protects the Achilles tendon, prevents shoe rubbing, and keeps gravel or mud out. Additionally, Nylon® and Spandex provide durability and elasticity for a secure and comfortable fit. Perfect for hiking, mountaineering, and other outdoor activities.

FAST&LIGHT - 54g (S)

The Laser Cap is the perfect accessory for those seeking to combine style and performance. Designed with a focus on comfort and functionality, it features strategically placed laser-cut perforations to enhance breathability, along with Cool2Dry fabric that dries quickly to keep your head protected and cool during mountain activities. Its adjustable ergonomic design provides a perfect fit, offering a secure hold without compromising comfort. The structured 6-panel front and flat visor provide a modern look, while the mesh back ensures optimal ventilation. Ideal for outdoor sports, training sessions, or a casual look with a FAST&LIGHT touch.

FAST&LIGHT - 75g

The Warmfit Neckwarmer is a high-performance neck gaiter designed for medium to high-intensity activities in cold climates. Its lower band, made of Polar Stretch Grid fabric, provides additional thermal insulation for the lower neck and chest, keeping you protected even in demanding conditions. The upper section, crafted from 100% merino wool, offers natural warmth, excellent breathability, and optimal performance for areas like the chin and mouth, even when wet. With a soft touch and great elasticity, the Warmfit Neckwarmer is a versatile and essential accessory for any mountain activity on cold days.

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The Warmfit Neckwarmer is a high-performance neck gaiter designed for medium to high-intensity activities in cold climates. Its lower band, made of Polar Stretch Grid fabric, provides additional thermal insulation for the lower neck and chest, keeping you protected even in demanding conditions. The upper section, crafted from 100% merino wool, offers natural warmth, excellent breathability, and optimal performance for areas like the chin and mouth, even when wet. With a soft touch and great elasticity, the Warmfit Neckwarmer is a versatile and essential accessory for any mountain activity on cold days.

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Midweight Seamless Toesocks designed for mountain activities on cold days. Extra protection and cushion that also make them a good option for trail running, especially in aggressive or long activities. Thanks to the separation of toes, the Midweight Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Outdoor Midweight Toesocks ensure high performance and durability for outdoor activities in low temperatures.

FAST&LIGHT - 39g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Ultra light, extremely packable and very breathable trail running cap. Short flexible brim that protects your face while allowing a wide visibility and makes it packable in a pocket of a running belt. Built with Cool2Dry® very light and quick dry provides a cool and ventilated feeling while protecting from sun, wind and rain.

An ideal accessory for any trail running activity under the sun, wind or rain.

FAST&LIGHT - 42g

Technical toesocks designed for Trail Running and Alpinism. Thanks to the separation of the toes, the Ultra toesocks eliminate humidity in between toes avoiding blisters and allowing a natural position of the foot. Highly breathable mesh on instep and arch band to keep them always in the right position. Ideal for high intensity activities in medium and high temperatures.

Technical toesocks designed for Trail Running and Alpinism. Thanks to the separation of the toes, the Ultra toesocks eliminate humidity in between toes avoiding blisters and allowing a natural position of the foot. Highly breathable mesh on instep and arch band to keep them always in the right position. Ideal for high intensity activities in medium and high temperatures.

The Vulcan mittens are designed for athletes facing extreme temperatures in high mountain conditions, providing maximum insulation and protection against the cold. They are ideal for altitudes between 6000 and 7000 meters or for those seeking exceptional warmth in blizzard conditions and during ski descents. Equipped with the advanced eVent® BIO membrane (19k/25k), these mittens are waterproof, breathable, and windproof, ensuring that your hands stay dry and warm.

The Sorona® insulation provides superior warmth with 400g in the back and 100g in the palm, blocking the cold from reaching every part of your hands. The reinforced leather palm ensures durability and a firm grip, while the extra warm lining in the back adds additional comfort in extreme temperatures. These mittens are the ideal choice for those who do not want to risk being without protection, keeping your fingers warm even in the most challenging conditions.  

FAST&LIGHT - 209g (S)

Ultra light cool and very breathable trail running cap designed for high intensity mountain activities. Rigid visor that offers a higher protection during all day long. Built with Cool2Dry® yarn reinforced by laser cut ventilations, it is very light and quick dry providing a cool and ventilated feeling while protecting from sun, wind and rain.

FAST&LIGHT - 50g

Ultra light cool and very breathable trail running cap designed for high intensity mountain activities. Rigid visor that offers a higher protection during all day long. Built with Cool2Dry® yarn reinforced by laser cut ventilations, it is very light and quick dry providing a cool and ventilated feeling while protecting from sun, wind and rain.

FAST&LIGHT - 50g

Ultra light cool and very breathable trail running cap designed for high intensity mountain activities. Rigid visor that offers a higher protection during all day long. Built with Cool2Dry® yarn reinforced by laser cut ventilations, it is very light and quick dry providing a cool and ventilated feeling while protecting from sun, wind and rain.

FAST&LIGHT - 50g

Ultra light cool and very breathable trail running cap designed for high intensity mountain activities. Rigid visor that offers a higher protection during all day long. Built with Cool2Dry® yarn reinforced by laser cut ventilations, it is very light and quick dry providing a cool and ventilated feeling while protecting from sun, wind and rain.

FAST&LIGHT - 50g

The Warmfit 100 Merino Wool boxers are high-performance underwear. Made entirely of pure merino wool, it offers total comfort as well as excellent performance. Extra soft touch in contact with the skin, for daily use on and off the mountain. An ideal complement to protect the most delicate area on the coldest days.

FAST&LIGHT - 94g (S/M)

The Warmfit 100 Merino Wool boxers are high-performance underwear. Made entirely of pure merino wool, it offers total comfort as well as excellent performance. Extra soft touch in contact with the skin, for daily use on and off the mountain. An ideal complement to protect the most delicate area on the coldest days.

FAST&LIGHT - 94g (S/M)

Midweight Seamless Toesocks designed for trail running activities on cold days. Extra protection and cushion that make them perfect for aggressive or long activities in rugged terrains. Thanks to the separation of toes, the Midweight Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock.

The Trail Midweight Toesocks ensure high performance and durability for trail running in low temperatures.

FAST&LIGHT - 27g

Midweight Seamless Toesocks designed for trail running activities on cold days. Extra protection and cushion that make them perfect for aggressive or long activities in rugged terrains. Thanks to the separation of toes, the Midweight Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock.

The Trail Midweight Toesocks ensure high performance and durability for trail running in low temperatures.

FAST&LIGHT - 27g

Lightweight mid-height toe socks specifically designed for running and trail running in moderate to high temperatures. The Air Mesh Toe Socks allow for natural toe separation, preventing blisters and promoting freer, more comfortable movement. The front of the cuff and instep are equipped with high-efficiency breathable mesh, maximizing ventilation to keep feet cool and dry, while the back provides a precise fit, ensuring stability and comfort with every step. Made with 67% Nylon, they offer excellent abrasion resistance and durability, combined with Coolmax® fiber for effective heat and moisture management, providing comfort on asphalt and mountain terrains. A technical sock that optimizes performance, built to withstand both intense training and long distances.

FAST&LIGHT - 25g (S)

Lightweight mid-height toe socks specifically designed for running and trail running in moderate to high temperatures. The Air Mesh Toe Socks allow for natural toe separation, preventing blisters and promoting freer, more comfortable movement. The front of the cuff and instep are equipped with high-efficiency breathable mesh, maximizing ventilation to keep feet cool and dry, while the back provides a precise fit, ensuring stability and comfort with every step. Made with 67% Nylon, they offer excellent abrasion resistance and durability, combined with Coolmax® fiber for effective heat and moisture management, providing comfort on asphalt and mountain terrains. A technical sock that optimizes performance, built to withstand both intense training and long distances.

FAST&LIGHT - 25g (S)

The Skeleton gloves are high-performance waterproof gloves designed to provide maximum protection and comfort for high-altitude winter activities, ideal for extreme cold, snow, and wind conditions. Equipped with the advanced eVent® BIO membrane, they offer waterproof, breathable, and windproof protection to keep your hands dry and warm. Their 100g Sorona® insulation ensures optimal warmth, maintaining heat at all times.

The goat leather palm with reinforcements provides durability and a secure grip, even on wet or slippery surfaces. Additionally, the ultra-durable palm material offers superior adhesion, while the index and thumb are touchscreen-compatible, allowing you to use devices without removing the gloves. The exclusive FLEXOR® technology delivers exceptional finger mobility, combining protection and dexterity for any mountain activity.  

FAST&LIGHT - 169g (S)

Seamless thong for women designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. Designed with microtensors that guarantee a perfect fit and no movements of the garment. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 16g (XS/S)

Seamless thong for women designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. Designed with microtensors that guarantee a perfect fit and no movements of the garment. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 16g (XS/S)

Thermal ultralight beanie designed for medium/high intensity outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect head accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 35 g

Thermal ultralight beanie designed for medium/high intensity outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect head accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 35 g

Thermal ultralight beanie designed for medium/high intensity outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect head accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 35 g

Thermal ultralight beanie designed for medium/high intensity outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect head accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 35 g

Lightweight waterproof gloves for mountaineering and winter activities. Designed for those seeking a waterproof glove that combines high protection against water and abrasion with maximum grip and hand feel. It features a super adhesive leather palm with reinforced areas for use with ropes. The HDry® membrane (19k/30k) and its patented lamination technology bond all the layers of the glove, preventing water from entering while providing excellent breathability and finger dexterity. Combined with its ultra-resistant Nylon exterior fabric, this guarantees exceptional durability.

A high-performance glove for FAST&LIGHT alpine activities.

FAST&LIGHT - 103g (S)

Mid-height toe socks for running and trail running, protect against the appearance of blisters and allow the natural separation of the toes. The Trail&Run MID Toe Socks combine abrasion resistance thanks to its high Nylon component (67%) with very good heat and moisture management thanks to the Coolmax® fiber. A technical sock that offers high performance and durability both on asphalt and in the mountains.

Mid-height toe socks for running and trail running, protect against the appearance of blisters and allow the natural separation of the toes. The Trail&Run MID Toe Socks combine abrasion resistance thanks to its high Nylon component (67%) with very good heat and moisture management thanks to the Coolmax® fiber. A technical sock that offers high performance and durability both on asphalt and in the mountains.

Mid-height toe socks for running and trail running, protect against the appearance of blisters and allow the natural separation of the toes. The Trail&Run MID Toe Socks combine abrasion resistance thanks to its high Nylon component (67%) with very good heat and moisture management thanks to the Coolmax® fiber. A technical sock that offers high performance and durability both on asphalt and in the mountains.

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex creating an ideal first layer garment in direct contact with the skin. Designed with microtensors on legs and back that guarantee a perfect fit and no movements. A basic that provides comfort and performance in a minimum weight.  

FAST&LIGHT - 37g (S/M)

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex creating an ideal first layer garment in direct contact with the skin. Designed with microtensors on legs and back that guarantee a perfect fit and no movements. A basic that provides comfort and performance in a minimum weight.  

FAST&LIGHT - 37g (S/M)

Waterproofing for washing machine. This product adds Water Repellency to our breathable waterproof clothing. If the outer fabric of our waterproof garments absorbs water, the garment can lose up to 70% breathability. It is quick and easy to apply in the washing machine and its highly Durable Water Repellency (DWR) coating develops during air drying.

Thermal neck warmer designed for outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 80 g

Thermal neck warmer designed for outdoor activities in low temperatures. The fabric honeycomb structure with microperforations provides an excellent thermal protection, a great fitting and breathability. The perfect accesory for winter trail running, alpinism and skimo.

FAST&LIGHT - 80 g

Medium-cut socks designed for mountain activities in moderate temperatures. Mountain Socks feature terry fabric in the toe and heel, providing excellent cushioning and comfort in key impact areas. Their design strikes a perfect balance between comfort, breathability, and durability on varied terrains. The upper part includes a more breathable fabric structure, enhancing ventilation and keeping feet cool and dry during long activity sessions. Made with durable materials, they are ideal for hiking, trekking, and other outdoor activities.

FAST&LIGHT - 52g (S)

Medium-cut socks designed for mountain activities in moderate temperatures. Mountain Socks feature terry fabric in the toe and heel, providing excellent cushioning and comfort in key impact areas. Their design strikes a perfect balance between comfort, breathability, and durability on varied terrains. The upper part includes a more breathable fabric structure, enhancing ventilation and keeping feet cool and dry during long activity sessions. Made with durable materials, they are ideal for hiking, trekking, and other outdoor activities.

FAST&LIGHT - 52g (S)

The WindBlock Pro gloves are designed for mountain athletes seeking lightweight thermal protection and maximum comfort in cold conditions. With a warm inner lining, they offer an excellent balance between lightness and insulation, ideal for mountaineering, skimo, and other winter activities. Their non-slip leather palm provides superior grip, while touchscreen-compatible fingers allow for device use without removing the gloves. The Velcro wrist closure ensures a secure and precise fit. Perfect for those looking for windproof gloves with an outstanding weight-to-warmth ratio, delivering protection, comfort, and ergonomic fit on every mountain adventure.

FAST&LIGHT - 98g (S)

The Casual Trucker is a perfect cap to show the colors OS2O - FAST&LIGHT in your daily adventures. With an ergonomic and ventilated design, this cap combines elegance and functionality. Its curved visor protects from the sun, while the 100% recycled Cool2Dry rear mesh allows excellent ventilation, keeping the head fresh at all times. Its adjustable snap lock ensures comfort for any head size. Elegance, functionality and FAST&LIGHT, the perfect complement.

FAST&LIGHT - 79g

Seamless panties designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex, creating an ideal first layer garment in direct contact with the skin. Designed with microtensors that guarantee a perfect fit and no movements of the garment. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 28g (XS/S)

Seamless panties designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex, creating an ideal first layer garment in direct contact with the skin. Designed with microtensors that guarantee a perfect fit and no movements of the garment. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 28g (XS/S)

Seamless panties designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex, creating an ideal first layer garment in direct contact with the skin. Designed with microtensors that guarantee a perfect fit and no movements of the garment. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 28g (XS/S)

Ultra-lightweight low-cut socks specifically designed for trail running and short-distance races, tailored for runners seeking maximum sensitivity with their shoes and terrain. FAST&LIGHT Socks feature a breathable design with ultra-thin mesh on the upper part, ensuring optimal ventilation to keep feet cool and dry. Their extremely lightweight construction provides a sense of freedom and comfort. Made from durable and breathable materials, they are ideal for competitions or training in warm conditions.

FAST&LIGHT - 27g (S)

Ultra-lightweight low-cut socks specifically designed for trail running and short-distance races, tailored for runners seeking maximum sensitivity with their shoes and terrain. FAST&LIGHT Socks feature a breathable design with ultra-thin mesh on the upper part, ensuring optimal ventilation to keep feet cool and dry. Their extremely lightweight construction provides a sense of freedom and comfort. Made from durable and breathable materials, they are ideal for competitions or training in warm conditions.

FAST&LIGHT - 27g (S)

Ultra-lightweight low-cut socks specifically designed for trail running and short-distance races, tailored for runners seeking maximum sensitivity with their shoes and terrain. FAST&LIGHT Socks feature a breathable design with ultra-thin mesh on the upper part, ensuring optimal ventilation to keep feet cool and dry. Their extremely lightweight construction provides a sense of freedom and comfort. Made from durable and breathable materials, they are ideal for competitions or training in warm conditions.

FAST&LIGHT - 27g (S)

The WindBlock Lite gloves are lightweight, windproof gloves designed for aerobic activities in mild climates, providing ideal protection for trail running and mountaineering in moderate temperatures. Perfect for athletes seeking a minimalist glove with excellent breathability, secure grip, and a comfortable, ergonomic fit. The non-slip palm ensures reliable control on varied terrain, and touchscreen-compatible fingertips allow the use of mobile devices without removing the gloves. Lightweight, functional, and comfortable, they’re the perfect companion for every outdoor adventure.  

FAST&LIGHT - 58g (S)

The Casual Trucker is a cap perfect for your daily adventures. With an ergonomic and ventilated design, this cap combines style and functionality. Its curved visor protects from the sun, while the 100% recycled Cool2Dry rear mesh allows excellent ventilation, keeping the head fresh at all times. Made with high quality materials, it is strong and durable, ideal for any urban or outdoor activities. Its adjustable snap lock ensures comfort for any head size. It's time to explore in style.

FAST&LIGHT - 77g

The Casual Trucker is a cap perfect for your daily adventures. With an ergonomic and ventilated design, this cap combines style and functionality. Its curved visor protects from the sun, while the 100% recycled Cool2Dry rear mesh allows excellent ventilation, keeping the head fresh at all times. Made with high quality materials, it is strong and durable, ideal for any urban or outdoor activities. Its adjustable snap lock ensures comfort for any head size. It's time to explore in style.

FAST&LIGHT - 77g

Seamless boxer designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex creating an ideal first layer garment in direct contact with the skin. Designed with microtensors on legs and back that guarantee a perfect fit and no movements. A basic that provides comfort and performance in a minimum weight.  

FAST&LIGHT - 54g (S/M)

Seamless boxer designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex creating an ideal first layer garment in direct contact with the skin. Designed with microtensors on legs and back that guarantee a perfect fit and no movements. A basic that provides comfort and performance in a minimum weight.  

FAST&LIGHT - 54g (S/M)

500 ml (17 fl oz) flexible bottle, designed to meet the needs of trail runners and long-distance adventurers. Its wide mouth allows for quick filling, making it easy to add ice or electrolytes to keep your drinks cool and optimize hydration. Made from high-quality, BPA- and PVC-free materials, it is safe for water and other beverages. Thanks to its ultralight design and ability to compress as it empties, it minimizes bounce and the risk of spills, enhancing your experience in demanding conditions. Compatible with most hydration packs, this soft flask is the perfect choice to keep you hydrated on medium and long-distance activities.

FAST&LIGHT - 42g

The Lining Gloves are designed to deliver maximum comfort during outdoor aerobic activities, such as trail running, particularly in mild climates and moderate temperatures. They can also be used as inner gloves in very cold conditions. Their thin, stretchy design offers excellent freedom of movement, while the breathable fabric ensures optimal ventilation, preventing heat and sweat buildup in your hands.

The silicone-coated palm provides a secure grip at all times, even on wet or slippery surfaces. Additionally, the touchscreen-compatible fingertips allow you to use devices without removing the gloves. These gloves are the perfect choice for athletes and outdoor enthusiasts seeking a versatile, functional glove to enhance every workout or adventure.  

FAST&LIGHT - 38g (S)

Seamless thong for women designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.  

FAST&LIGHT - 16g (XS/S)

Light and very breathable trail running visor. Built with Cool2Dry® fabric, ultralight and quick drying, it provides a cool and ventilated feeling while being protected from the sun. Semi flexible brim that allows it to be packed in a very low volume rebounding to its original position in seconds.

An ideal accessory for any trail running activity to protect your face from the sun or rain providing a proper ventilation of the head.

FAST&LIGHT - 31g

Light and very breathable trail running visor. Built with Cool2Dry® fabric, ultralight and quick drying, it provides a cool and ventilated feeling while being protected from the sun. Semi flexible brim that allows it to be packed in a very low volume rebounding to its original position in seconds.

An ideal accessory for any trail running activity to protect your face from the sun or rain providing a proper ventilation of the head.

FAST&LIGHT - 31g

Light and very breathable trail running visor. Built with Cool2Dry® fabric, ultralight and quick drying, it provides a cool and ventilated feeling while being protected from the sun. Semi flexible brim that allows it to be packed in a very low volume rebounding to its original position in seconds.

An ideal accessory for any trail running activity to protect your face from the sun or rain providing a proper ventilation of the head.

FAST&LIGHT - 31g

Light and very breathable trail running visor. Built with Cool2Dry® fabric, ultralight and quick drying, it provides a cool and ventilated feeling while being protected from the sun. Semi flexible brim that allows it to be packed in a very low volume rebounding to its original position in seconds.

An ideal accessory for any trail running activity to protect your face from the sun or rain providing a proper ventilation of the head.

FAST&LIGHT - 31g

300 ml flexible bottle (10 fl oz.), ideal for those seeking a lightweight and compact hydration option. Its design and size make it perfect for carrying in hydration belts, fitting comfortably and allowing quick access to drinks during activity. The optimized nozzle size enables easy, fast flow, while the bottle compresses progressively as it empties, reducing volume, bounce, and discomfort while on the move. Made from high-quality, BPA- and PVC-free materials, it’s safe and environmentally friendly. This soft flask is the perfect companion to keep you well-hydrated on short to mid-distance outings, ensuring each sip is efficient and comfortable.

FAST&LIGHT - 26g

Seamless toesocks designed for Trail Running. Thanks to the separation of toes, the Trail Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Mini crew height that prevents gravel or mud from entering the interior. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Trail Toesocks ensure high performance and durability for medium and long distance trail running activities.

Seamless toesocks designed for Trail Running. Thanks to the separation of toes, the Trail Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Mini crew height that prevents gravel or mud from entering the interior. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Trail Toesocks ensure high performance and durability for medium and long distance trail running activities.

Seamless toesocks designed for Trail Running. Thanks to the separation of toes, the Trail Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Mini crew height that prevents gravel or mud from entering the interior. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Trail Toesocks ensure high performance and durability for medium and long distance trail running activities.

Seamless toesocks designed for Trail Running. Thanks to the separation of toes, the Trail Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Mini crew height that prevents gravel or mud from entering the interior. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Trail Toesocks ensure high performance and durability for medium and long distance trail running activities.

Seamless toesocks designed for Trail Running. Thanks to the separation of toes, the Trail Toesocks eliminate moisture in between avoiding blisters and allowing a natural position of the foot. Mini crew height that prevents gravel or mud from entering the interior. Good breathability and stability thanks to the instep mesh and arch band that avoids any movement of the sock. The Trail Toesocks ensure high performance and durability for medium and long distance trail running activities.

The only technical cleaner specifically designed for hydrophobic and regular down which cleans effectively, while restoring water repellency and maintaining fill power and insulation.

Medium-cut socks specially designed for trail running, ideal for runners who prioritize comfort without compromising performance. TRAIL Socks offer strategic cushioning in the toe and heel, providing superior protection with every step. Designed for medium and long distances, they combine comfort and support on demanding terrains. Their design includes ventilation channels on the upper part, maximizing breathability and keeping feet cool and dry even during prolonged efforts. Made with durable, high-performance materials, they are the perfect choice for competitions and training on technical terrains that demand greater support and cushioning.

FAST&LIGHT - 41g (S)

Medium-cut socks specially designed for trail running, ideal for runners who prioritize comfort without compromising performance. TRAIL Socks offer strategic cushioning in the toe and heel, providing superior protection with every step. Designed for medium and long distances, they combine comfort and support on demanding terrains. Their design includes ventilation channels on the upper part, maximizing breathability and keeping feet cool and dry even during prolonged efforts. Made with durable, high-performance materials, they are the perfect choice for competitions and training on technical terrains that demand greater support and cushioning.

FAST&LIGHT - 41g (S)

Medium-cut socks specially designed for trail running, ideal for runners who prioritize comfort without compromising performance. TRAIL Socks offer strategic cushioning in the toe and heel, providing superior protection with every step. Designed for medium and long distances, they combine comfort and support on demanding terrains. Their design includes ventilation channels on the upper part, maximizing breathability and keeping feet cool and dry even during prolonged efforts. Made with durable, high-performance materials, they are the perfect choice for competitions and training on technical terrains that demand greater support and cushioning.

FAST&LIGHT - 41g (S)

The Speedlite Gloves are lightweight and versatile trail running gloves. Made with a double layer fabric, the outside layer made of elastane offers a great fit while the inner  microfleece guarantees a soft touch and breathability. The result of this combination is a warm and comfortable running glove. They also feature a silicone design for an improved grip. Touch-screen compatible.

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 37g (S/M)

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 37g (S/M)

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 37g (S/M)

Seamless briefs designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 37g (S/M)

200 ml ultralight folding cup, perfect for reducing plastic use in outdoor activities and competitions. Its compact design allows for easy storage in a belt pocket or hanging from its ring for quick access. Reusable, practical, and 100% BPA- and PVC-free, ensuring safe and eco-friendly use.

FAST&LIGHT - 9g

Tenacious Tape Gear Aid by McNett is an all-purpose, transparent weatherproof repair tape that fixes rips, holes, taping and gashes in almost all kinds of outdoor gear. It stays put no matter what climate conditions appear and leaves no sticky mess. It is easy to apply and care. Tenacious Tape is the best option to repair O2 Waterproof Membrane and eVent fabrics in OS2O’s products.

Seamless boxer designed for high intensity sport activities. Thanks to its composition of Polypropylene Dryarn®, it provides high breathability and quick dry, together with spandex that guarantees a perfect fit, creating an ideal first layer garment in direct contact with the skin. No movement or chafing. A basic that provides comfort and performance in a minimum weight.

FAST&LIGHT - 54g (S/M)