OS2O

FAST&LIGHT

Versatile and light products for the practice of fast activities in the mountains

FAST&LIGHT

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Insulation Shorts Woman

Insulation overshort for mountain skiing and mountaineering that offer thermal protection for low temperatures. Made of resistant nylon and 100% windproof with Sorona®DuPont® 80g fiber filling. Full side zippers for quick use, even with boots on. YKK® Vislon™ zippers. Exterior water repellent treatment DWR. The ideal companion for FAST&LIGHT activities in low temperatures.

FAST&LIGHT - 150g (XS)

sorona_dupont.jpg

Price €79.90

Hoka Ultra Trail

The Hoka Ultra Trail Jacket is a lightweight and versatile garment designed for trail running. Thanks to the combination of X-Stretch and mesh fabric together with its pattern, Action FIT, provides a total freedom of movement while keeping a perfect balance between thermal protection and breathability. Elastic mesh pockets for carrying gels and bars comfortably. The ultimate jacket for running the trails under mid and low temperatures.

FAST&LIGHT - 367 g (S)

Producto Especial Material Desnivel

Price €79.90

Hoka Ultra Trail

The Hoka Ultra Trail Jacket is a lightweight and versatile garment designed for trail running. Thanks to the combination of X-Stretch and mesh fabric together with its pattern, Action FIT, provides a total freedom of movement while keeping a perfect balance between thermal protection and breathability. Elastic mesh pockets for carrying gels and bars comfortably. The ultimate jacket for running the trails under mid and low temperatures.

FAST&LIGHT - 367 g (S)

Producto Especial Material Desnivel

Price €79.90

Hoka Ultra Trail

The Hoka Ultra Trail Jacket is a lightweight and versatile garment designed for trail running. Thanks to the combination of X-Stretch and mesh fabric together with its pattern, Action FIT, provides a total freedom of movement while keeping a perfect balance between thermal protection and breathability. Elastic mesh pockets for carrying gels and bars comfortably. The ultimate jacket for running the trails under mid and low temperatures.

FAST&LIGHT - 367 g (S)

Producto Especial Material Desnivel

Price €79.90

Hoka Ultra Trail

The Hoka Ultra Trail Jacket is a lightweight and versatile garment designed for trail running. Thanks to the combination of X-Stretch and mesh fabric together with its pattern, Action FIT, provides a total freedom of movement while keeping a perfect balance between thermal protection and breathability. Elastic mesh pockets for carrying gels and bars comfortably. The ultimate jacket for running the trails under mid and low temperatures.

FAST&LIGHT - 367 g (S)

Producto Especial Material Desnivel

Price €79.90

Hoka Ultra Trail

The Hoka Ultra Trail Jacket is a lightweight and versatile garment designed for trail running. Thanks to the combination of X-Stretch and mesh fabric together with its pattern, Action FIT, provides a total freedom of movement while keeping a perfect balance between thermal protection and breathability. Elastic mesh pockets for carrying gels and bars comfortably. The ultimate jacket for running the trails under mid and low temperatures.

FAST&LIGHT - 367 g (S)

Producto Especial Material Desnivel

Price €79.90

Warmfit Merino 100 Pants

The Warmfit 100 Merino Wool Pants are a high performance first layer for mountaineering and alpinism. Made entirely of merino wool, it offers a high thermal capacity even when wet, combining its natural calorific properties with good breathability to keep you comfortable and dry even in the most adverse conditions. It also offers a very soft touch in contact with the skin. Its ergonomic cut provides a perfect fit, good mobility and comfort. An ideal complement as high-performance long johns on the coldest days.

FAST&LIGHT - 179g (S)

merino wool

Price €69.90

Warmfit Merino 100 Pants

The Warmfit 100 Merino Wool Pants are a high performance first layer for mountaineering and alpinism. Made entirely of merino wool, it offers a high thermal capacity even when wet, combining its natural calorific properties with good breathability to keep you comfortable and dry even in the most adverse conditions. It also offers a very soft touch in contact with the skin. Its ergonomic cut provides a perfect fit, good mobility and comfort. An ideal complement as high-performance long johns on the coldest days.

FAST&LIGHT - 179g (S)

merino wool

Price €69.90

Dynamic Shorts Woman

Light shorts designed for FAST&LIGHT mountaineering. Made with DYNAMICLite fabric, double weave version, it provides 4-way stretch making it very comfortable. Its Custom-Width adjustment makes it extremely quick to change its fit to any activity. Highly breathable, quick-drying, while offering a soft touch in contact with the skin. A technical short designed for fast activities in mid and high temperatures.

FAST&LIGHT - 209g (XS)

OS2O hecho en España

Price €69.90

Dynamic Shorts Woman

Light shorts designed for FAST&LIGHT mountaineering. Made with DYNAMICLite fabric, double weave version, it provides 4-way stretch making it very comfortable. Its Custom-Width adjustment makes it extremely quick to change its fit to any activity. Highly breathable, quick-drying, while offering a soft touch in contact with the skin. A technical short designed for fast activities in mid and high temperatures.

FAST&LIGHT - 209g (XS)

OS2O hecho en España

Price €69.90

Warmfit Merino 100 Pants Woman

Warmfit 100 Merino Wool are high performance base layer pants. Made entirely of merino wool, it offers a high thermal capacity even when wet, combining its natural calorific properties with good breathability to keep you comfortable in the most adverse conditions. It also offers an extra soft touch in contact with the skin. Its ergonomic cut with a specific pattern for women provides a perfect fit, mobility and comfort. An ideal complement as high-performance long johns on the coldest days.

FAST&LIGHT - 158g (XS)

merino wool

Price €69.90

Dynamic Shorts

Light shorts designed for FAST&LIGHT mountaineering. Made with DYNAMICLite fabric, double weave version, it provides 4-way stretch making it very comfortable. Its Custom-Width adjustment makes it extremely quick to change its fit to any activity. Highly breathable, quick-drying, while offering a soft touch in contact with the skin. A technical short designed for fast activities in mid and high temperatures.

FAST&LIGHT - 238g (S)

OS2O hecho en España

Price €69.90

Dynamic Shorts

Light shorts designed for FAST&LIGHT mountaineering. Made with DYNAMICLite fabric, double weave version, it provides 4-way stretch making it very comfortable. Its Custom-Width adjustment makes it extremely quick to change its fit to any activity. Highly breathable, quick-drying, while offering a soft touch in contact with the skin. A technical short designed for fast activities in mid and high temperatures.

FAST&LIGHT - 238g (S)

OS2O hecho en España

Price €69.90

Racing Compression Shorts

Compression shorts with integrated belt for trail running. Made with a seamless construction, which offers great freedom of movement, high support for the muscles, no friction, the Racing Shorts are ideal for long distances. With a balanced mix of polyester, polyamide and elastane fibers, they provide high compression while being resistant and highly breathable. Large-capacity integrated belt ideal for use in training and competition, the load is kept without bouncing even at high paces and on technical terrain.  

FAST&LIGHT - 144g (XS)

Price €59.90

Racing Compression Shorts

Compression shorts with integrated belt for trail running. Made with a seamless construction, which offers great freedom of movement, high support for the muscles, no friction, the Racing Shorts are ideal for long distances. With a balanced mix of polyester, polyamide and elastane fibers, they provide high compression while being resistant and highly breathable. Large-capacity integrated belt ideal for use in training and competition, the load is kept without bouncing even at high paces and on technical terrain.  

FAST&LIGHT - 144g (XS)

Price €59.90

Racing Compression Shorts

Compression shorts with integrated belt for trail running. Made with a seamless construction, which offers great freedom of movement, high support for the muscles, no friction, the Racing Shorts are ideal for long distances. With a balanced mix of polyester, polyamide and elastane fibers, they provide high compression while being resistant and highly breathable. Large-capacity integrated belt ideal for use in training and competition, the load is kept without bouncing even at high paces and on technical terrain.  

FAST&LIGHT - 144g (XS)

Price €59.90

Insulation Vest

Extremely light insulated vest, designed with a wind-stopper ripstop front membrane, filled with a light (60g/m²) synthetic insulation that provides an extra protection from cold, and a back mesh, that enhances breathability. A perfect complement for medium/high intensity mountain activities in medium/low temperatures.

FAST&LIGHT - 150g (M)

Price €59.90

Trail Lite Shorts

Lightweight trail running shorts made with Cool2Dry fabric, fresh, quick-dry and with stretchable union panels to move freely on technical terrain. With a double waist adjustment of elastic band and string, it allows to carry some weight in the back pocket without any movement. Highly breathable, the Trail Lite shorts are ideal for training and competitions.

FAST&LIGHT - 115g (S)

OS2O hecho en España

Price €49.90

Trail Lite Shorts

Lightweight trail running shorts made with Cool2Dry fabric, fresh, quick-dry and with stretchable union panels to move freely on technical terrain. With a double waist adjustment of elastic band and string, it allows to carry some weight in the back pocket without any movement. Highly breathable, the Trail Lite shorts are ideal for training and competitions.

FAST&LIGHT - 115g (S)

OS2O hecho en España

Price €49.90

Thermal Seamless Shirt Woman

T-shirt first layer high performance, provides a perfect regulation of body temperature. Made from a mixture of polypropylene and elastane in a seamless construction with thermo-active panels that offer an ideal balance between heat capacity and perspiration. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a garment ideal for indoor use in intense activities at low temperatures.

FAST&LIGHT - one hundred and thirty-six grams . (XS)

Price €49.90

Thermal Seamless Shirt Woman

T-shirt first layer high performance, provides a perfect regulation of body temperature. Made from a mixture of polypropylene and elastane in a seamless construction with thermo-active panels that offer an ideal balance between heat capacity and perspiration. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a garment ideal for indoor use in intense activities at low temperatures.

FAST&LIGHT - one hundred and thirty-six grams . (XS)

Price €49.90

Thermal Seamless Shirt Woman

T-shirt first layer high performance, provides a perfect regulation of body temperature. Made from a mixture of polypropylene and elastane in a seamless construction with thermo-active panels that offer an ideal balance between heat capacity and perspiration. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a garment ideal for indoor use in intense activities at low temperatures.

FAST&LIGHT - one hundred and thirty-six grams . (XS)

Price €49.90

Thermal Seamless Shirt Woman

T-shirt first layer high performance, provides a perfect regulation of body temperature. Made from a mixture of polypropylene and elastane in a seamless construction with thermo-active panels that offer an ideal balance between heat capacity and perspiration. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a garment ideal for indoor use in intense activities at low temperatures.

FAST&LIGHT - one hundred and thirty-six grams . (XS)

Price €49.90

OS2O Compression Pants

Compression pants for aerobic activities, where support and freedom of movement are essential. Made in a seamless construction, they offer great adaptability to each muscle group of the legs. Its fabric is a mixture of polyester, polyamide and elastane yarns, offering high compression while being resistant and highly breathable. The compression pants can be used as an exterior garment for trail running or as a baselayer on colder days.

FAST&LIGHT – 158g (S)

Price €49.90

OS2O Compression Pants

Compression pants for aerobic activities, where support and freedom of movement are essential. Made in a seamless construction, they offer great adaptability to each muscle group of the legs. Its fabric is a mixture of polyester, polyamide and elastane yarns, offering high compression while being resistant and highly breathable. The compression pants can be used as an exterior garment for trail running or as a baselayer on colder days.

FAST&LIGHT – 158g (S)

Price €49.90

Saiko Vest

Ultra-light vest featuring a front windstopper membrane with risptop and back mesh for enhanced breathability. Extremely foldable, it is a perfect accesory for weather changing conditions or windy days.

FAST&LIGHT - 60 gr (M)

YKK 140.jpg

Price €39.90

Saiko Vest

Ultra-light vest featuring a front windstopper membrane with risptop and back mesh for enhanced breathability. Extremely foldable, it is a perfect accesory for weather changing conditions or windy days.

FAST&LIGHT - 60 gr (M)

YKK 140.jpg

Price €39.90

Trail Compression Shorts

Trail running tights with a uniform mid compression. Thanks to its seamless construction with polyester, ,polyamide and spandex combines a great adaptability, resistance together with a very high breathability keeping skin dry at all times. Ideal as an outer layer or as the first layer under pants. A perfect garment for intense activities in medium temperatures.

FAST&LIGHT – 111g (S)

Price €39.90

Trail Compression Shorts

Trail running tights with a uniform mid compression. Thanks to its seamless construction with polyester, ,polyamide and spandex combines a great adaptability, resistance together with a very high breathability keeping skin dry at all times. Ideal as an outer layer or as the first layer under pants. A perfect garment for intense activities in medium temperatures.

FAST&LIGHT – 111g (S)

Price €39.90

Ultra Ridge T-Shirt

Lightweight technical t-shirt designed to keep you cool and dry in high intensity activities. Made of 100% recycled Cool2Dry® microfiber fabric, it has a very soft touch in contact with the skin, extremely quick drying and protection UPF 40 against ultraviolet radiation.   

FAST&LIGHT - 78g

UV protectionMade in Spain 140.jpg

Price €34.90

Warmfit Merino 100 Boxer

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)

merino wool

Price €34.90

Warmfit Merino 100 Boxer

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)

merino wool

Price €34.90

StretchLight Trail Belt

Light high capacity trail running belt ideal for short and medium distance races or as an accesory to a vest in long distance ones. Its seamless highly stretchable fabric provides a perfect fit while carrying a mobile device, gels, bars, gloves, poles (front or back), a 500 ml soft flask and a waterproof jacket in a no-rebound compact way.

FAST&LIGHT - 61g


Made%20in%20Spain%20140.jpg

Price €34.90

StretchLight Trail Belt

Light high capacity trail running belt ideal for short and medium distance races or as an accesory to a vest in long distance ones. Its seamless highly stretchable fabric provides a perfect fit while carrying a mobile device, gels, bars, gloves, poles (front or back), a 500 ml soft flask and a waterproof jacket in a no-rebound compact way.

FAST&LIGHT - 61g


Made%20in%20Spain%20140.jpg

Price €34.90

Seamless Compression Tech Shirt

Short sleeve compression t-shirt for men and women. Tight cut that adapts to the body like a second skin. It offers the maximum thermal insulation, with an efficient transpitation to keep the body dry all the time. Thermo-regulating effect that gives the garment the condition of cold or heat depending on the conditions and intensity of the activity.

FAST&LIGHT - 123g (S)
Made%20in%20Spain%20140.jpgDryan

Price €32.90

Speedlite Cap

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

OS2O hecho en España

Price €19.90

Speedlite Cap

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

OS2O hecho en España

Price €19.90

Speedlite Cap

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

OS2O hecho en España

Price €19.90

Speedlite Cap

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

OS2O hecho en España

Price €19.90

Arm Sleeves

Ultralight and functional arm sleeves that offer insulation, protection and a high breathability. Made of Polypropylene Dryarn and spandex, the OS2O Arm Sleeves provide high elasticity in both directions and a quick dry function even under high humidity environments. They also have good durability and resistance from scratches. A basic item providing safety and high performance in a minimum weight.

FAST&LIGHT - 24g (S/M) 

Price €19.90

Neck Warmer

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

Price €19.90

Neck Warmer

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

Price €19.90

Softflask 500ml

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

Price €13.90

Softflask 300ml

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

Price €11.90

Soft Cup

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

Price €6.90

Race Day Perforated T-Shirt

Ultralight and breathable technical shirt without sleeves designed as underwear for very high intensity activities and competitions. What. Manufacture from fabric Effepi Avatar it combines microfiber from polyester and elastane, weighing just 75 grams. /m2 , the Race Day T-shirt fits smoothly like a second skin to let out moisture generated by the body and keep it cool and dry. Its microperforations enhance ventilation while providing greater elasticity in all 4 directions for better fit. A first layer that ensures light thermal protection, quick drying and comfort for days when moving fast is a priority.  

FAST&LIGHT - 45 grams

effepi.jpgOS2O hecho en España

Price €34.90
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