List of products by brand OS2O

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)

The Warmfit 100 Merino T-shirt Women is a high-performance thermal garment for mountaineering and alpinism. Made entirely of merino wool, without blends, it offers a high thermal capacity even when wet, combining natural calorific properties with good breathability. Thanks to its soft touch and women-specific ergonomic cut, the Warmfit 100 is a versatile shirt, ideal as a base layer in winter and as an outer shirt on cool days.

FAST&LIGHT - 137g (XS)

Women-specific technical pants for FAST&LIGHT activities in medium and low temperatures​, manufactured with the innovative recycled (69%) STORMFLEECE PRO® All Weather Resistant fabric: windproof, water repellent, highly breathable and thermally insulating. Elastic waist for perfect fit, harness-compatible pocket, inner gaiter for excellent support with boots on. YKK® Vislon™zippers. DWR water repellent exterior treatment.

The Meteor Pants are stretchable and extremely light designed to move fast and without restrictions on a wide range of activities and conditions.

FAST&LIGHT - 240g (XS)

Technical pants for mountaineering and skimo. Made with four-way stretch, windproof, water-repellent and highly resistant STRETCH SHELL ALPINE fabric that provides effective protection for activities in mixed conditions. Preformed knees, harness compatible pocket, custom-width waist adjustment system. Specific pattern for women. Reinforced with Kevlar® on ankles, incorporates a lycra panel that works as a boot gaiter making it adaptable to any type of boot. A versatile garment ideal for winter mountain adventures where resistance and protection are a must.

FAST&LIGHT - 462g (XS)

FAST&LIGHT – 158g (S)

FAST&LIGHT – 158g (S)

The Breathout PRO jacket is a lightweight technical 3-layer hardshell that offers a high waterproof protection and outstanding breathable capacity. Designed for alpinism and ski mountaineering in the most demanding conditions. Membrane eVent® DVStorm ™ 3-layer with Direct Venting™ technology, providing waterproof values of 20,000mm H2O column and a breathability function of MVTR 30,000g/(m² · 24h). 100% thermo-sealed seams, the outer layer is made of nylon with a double density yarn with a hybrid construction  (15 and 40 Denier) that provides both high resistance and a perfect adaptability to extenuant movements. YKK™ Vislon AquaGuard® waterproof zippers. The Breathout Pro Jacket is ideal for high intensity alpine activities under the most adverse weather conditions.

FAST&LIGHT - 348 g. (S)

Technical alpine jacket for winter activities, made of PFC-free Stretch Shell PRO waterproof (20,000mm H2O column), breathable (20,000g/(m² · 24h)), elastic and with a warm, soft hand touch that offers a high ratio between thermal protection and weight. Easy-access pockets on chest and harness-compatible pockets on sides. The Eiger PRO allows complete freedom of movement making it ideal for demanding mountain crossings of several days.  

FAST&LIGHT - 575g (S)

Highly thermal ultralight (250 g.) jacket with 850 CUIN goose down hydro-repellent filling, designed to offer maximum protection in winter FAST&LIGHT activities. Water-repellent (DWR), windproof 100% and highly resistant. Thanks to its PFC-Free goose down RDS®-certified DownTek® 93/7 850 CUIN with hydro repellent treatment, the NEBULÆ jacket traps the hot air in the down clusters even in rainy or snowy conditions. Total functionality in the minimum weight.

FAST&LIGHT - 250g  (S)

Highly thermal ultralight (250 g.) jacket with 850 CUIN goose down hydro-repellent filling, designed to offer maximum protection in winter FAST&LIGHT activities. Water-repellent (DWR), windproof 100% and highly resistant. Thanks to its PFC-Free goose down RDS®-certified DownTek® 93/7 850 CUIN with hydro repellent treatment, the NEBULÆ jacket traps the hot air in the down clusters even in rainy or snowy conditions. Total functionality in the minimum weight.

FAST&LIGHT - 250g  (S)

Highly thermal ultralight (250 g.) jacket with 850 CUIN goose down hydro-repellent filling, designed to offer maximum protection in winter FAST&LIGHT activities. Water-repellent (DWR), windproof 100% and highly resistant. Thanks to its PFC-Free goose down RDS®-certified DownTek® 93/7 850 CUIN with hydro repellent treatment, the NEBULÆ jacket traps the hot air in the down clusters even in rainy or snowy conditions. Total functionality in the minimum weight.

FAST&LIGHT - 250g  (S)

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.

FAST&LIGHT – 111g (S)

FAST&LIGHT – 111g (S)

Ultralight waterproof pants, designed for ski touring or FAST&LIGHT activities in the rain/snow. Manufactured with the innovative O2 2.9 layer membrane, waterproof (20,000mm H2O column) breathable (20,000g/m²·24h) and totally windproof. Heat-sealed seams, full YKK™ side zippers to put them on quickly without removing skimo or mountain boots. Folds into its own pocket in a very reduced space. A versatile product for high-intensity activities and competitions under the rain/snow.

FAST&LIGHT - 185g (XS)

Ultralight waterproof pants, designed for ski touring or FAST&LIGHT activities in the rain/snow. Manufactured with the innovative O2 2.9 layer membrane, waterproof (20,000mm H2O column) breathable (20,000g/m²·24h) and totally windproof. Heat-sealed seams, full YKK™ side zippers to put them on quickly without removing skimo or mountain boots. Folds into its own pocket in a very reduced space. A versatile product for high-intensity activities and competitions under the rain/snow.

FAST&LIGHT - 185g (XS)

Ultralight insulated down jacket for FAST&LIGHT activities, warm, packable and easy to transport. Made of Nylon 20 D fabric, 100% windproof with a double layer construction that protects the feather from moisture. DWR (Durable Water Repellency) exterior treatment and 90/10 duck down 650 CUINS of fill power, providing a high thermal protection in a very light weight. 3 outside harness-compatible pockets and 3 inner ones. The Fastlite 650 is a piece of equipment that combines perectly durability, lightness and insulation.

FAST&LIGHT - 452g (S)

Ultralight insulated down jacket for FAST&LIGHT activities, warm, packable and easy to transport. Made of Nylon 20 D fabric, 100% windproof with a double layer construction that protects the feather from moisture. DWR (Durable Water Repellency) exterior treatment and 90/10 duck down 650 CUINS of fill power, providing a high thermal protection in a very light weight. 3 outside harness-compatible pockets and 3 inner ones. The Fastlite 650 is a piece of equipment that combines perectly durability, lightness and insulation.

FAST&LIGHT - 452g (S)

Ultralight insulated down jacket for FAST&LIGHT activities, warm, packable and easy to transport. Made of Nylon 20 D fabric, 100% windproof with a double layer construction that protects the feather from moisture. DWR (Durable Water Repellency) exterior treatment and 90/10 duck down 650 CUINS of fill power, providing a high thermal protection in a very light weight. 3 outside harness-compatible pockets and 3 inner ones. The Fastlite 650 is a piece of equipment that combines perectly durability, lightness and insulation.

FAST&LIGHT - 452g (S)

850 CUIN down filling insulated jacket for alpine activities under very low temperatures. Made of highly resistant Nylon 20D fabric, 100% windproof with a double layer construction that protects down from moisture. Water Repellency exterior treatment DWR and 90/10 duck down filling (850 CUIN Fill Power) that provides the maximum thermal protection at a minimum weight. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Compression bag included to facilitate transportation.

FAST&LIGHT - 523g  (S)

850 CUIN down filling insulated jacket for alpine activities under very low temperatures. Made of highly resistant Nylon 20D fabric, 100% windproof with a double layer construction that protects down from moisture. Water Repellency exterior treatment DWR and 90/10 duck down filling (850 CUIN Fill Power) that provides the maximum thermal protection at a minimum weight. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Compression bag included to facilitate transportation.

FAST&LIGHT - 523g  (S)

850 CUIN down filling insulated jacket for alpine activities under very low temperatures. Made of highly resistant Nylon 20D fabric, 100% windproof with a double layer construction that protects down from moisture. Water Repellency exterior treatment DWR and 90/10 duck down filling (850 CUIN Fill Power) that provides the maximum thermal protection at a minimum weight. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Compression bag included to facilitate transportation.

FAST&LIGHT - 523g  (S)

850 CUIN down filling insulated jacket for alpine activities under very low temperatures. Made of highly resistant Nylon 20D fabric, 100% windproof with a double layer construction that protects down from moisture. Water Repellency exterior treatment DWR and 90/10 duck down filling (850 CUIN Fill Power) that provides the maximum thermal protection at a minimum weight. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Compression bag included to facilitate transportation.

FAST&LIGHT - 523g  (S)

850 CUIN down filling insulated jacket for alpine activities under very low temperatures. Made of highly resistant Nylon 20D fabric, 100% windproof with a double layer construction that protects down from moisture. Water Repellency exterior treatment DWR and 90/10 duck down filling (850 CUIN Fill Power) that provides the maximum thermal protection at a minimum weight. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Compression bag included to facilitate transportation.

FAST&LIGHT - 523g  (S)

Highly thermal down jacket for women designed for winter alpine activities. Its filling 90/10 duck down filling (850 CUIN Fill Power) maximizes protection while keeping a low weight. Exterior fabric Nylon 20D with a double layer construction and DWR (Water Repellency) that protects it from moisture, 100% windproof and makes it highly resistant against abrasion. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Includes compression bag. Maximum insulation at a very low weight.

FAST&LIGHT - 479g  (XS)

Highly thermal down jacket for women designed for winter alpine activities. Its filling 90/10 duck down filling (850 CUIN Fill Power) maximizes protection while keeping a low weight. Exterior fabric Nylon 20D with a double layer construction and DWR (Water Repellency) that protects it from moisture, 100% windproof and makes it highly resistant against abrasion. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Includes compression bag. Maximum insulation at a very low weight.

FAST&LIGHT - 479g  (XS)

Highly thermal down jacket for women designed for winter alpine activities. Its filling 90/10 duck down filling (850 CUIN Fill Power) maximizes protection while keeping a low weight. Exterior fabric Nylon 20D with a double layer construction and DWR (Water Repellency) that protects it from moisture, 100% windproof and makes it highly resistant against abrasion. Designed as a belay jacket for the coldest north walls or for activities under temperatures well below freezing. Includes compression bag. Maximum insulation at a very low weight.

FAST&LIGHT - 479g  (XS)

Extremely lightweight and versatile jacket thanks to its high-performance StretchShell Pro with high water resistance (15k), very high breathability (30k) and light thermal protection. A very complete garment for any FAST&LIGHT activity in medium and low temperatures, where protection from weather conditions together with a proper ventilation are guaranteed even during high intensity activities like mountaneering ski.

FAST&LIGHT - 247 grams . (XS)

Extremely lightweight and versatile jacket thanks to its high-performance StretchShell Pro with high water resistance (15k), very high breathability (30k) and light thermal protection. A very complete garment for any FAST&LIGHT activity in medium and low temperatures, where protection from weather conditions together with a proper ventilation are guaranteed even during high intensity activities like mountaneering ski.

FAST&LIGHT - 247 grams . (XS)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for your medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allow the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 402g (S)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for your medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allow the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 402g (S)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for your medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allow the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 402g (S)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for your medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allow the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 402g (S)

The Hoka Ultra Trail jacket designed for women is a lightweight and versatile garment. Jacket that fits the body thanks to X-Stretch fabric, allow yourself to make any movement. Medium thermal insulation and breathability. Perfect jacket for the practice of trail running in low temperatures.

FAST&LIGHT - 322g (XS)

The Hoka Ultra Trail jacket designed for women is a lightweight and versatile garment. Jacket that fits the body thanks to X-Stretch fabric, allow yourself to make any movement. Medium thermal insulation and breathability. Perfect jacket for the practice of trail running in low temperatures.

FAST&LIGHT - 322g (XS)

Ultra light softshell jacket designed for FAST&LIGHT adventures. Manufactured in 3-layer StretchShell PRO, waterproof (15.000mm H2O), highly breathable (30.000g/(m²·24h)) and 100% wind-proof. Inner microfleece that provides a light thermal protection. Ultimate versatility, the ideal garment for high intensity mountain activities in medium and low temperatures.

FAST&LIGHT - 273g.  (S)

Ultra light softshell jacket designed for FAST&LIGHT adventures. Manufactured in 3-layer StretchShell PRO, waterproof (15.000mm H2O), highly breathable (30.000g/(m²·24h)) and 100% wind-proof. Inner microfleece that provides a light thermal protection. Ultimate versatility, the ideal garment for high intensity mountain activities in medium and low temperatures.

FAST&LIGHT - 273g.  (S)

Ultra light softshell jacket designed for FAST&LIGHT adventures. Manufactured in 3-layer StretchShell PRO, waterproof (15.000mm H2O), highly breathable (30.000g/(m²·24h)) and 100% wind-proof. Inner microfleece that provides a light thermal protection. Ultimate versatility, the ideal garment for high intensity mountain activities in medium and low temperatures.

FAST&LIGHT - 273g.  (S)

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)

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)

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)

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

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)

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)

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)

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)

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)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allows the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, highly thermal, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 311g (XS)

The POLAIR GRID Jacket is a light and elastic jacket that provides a great balance between thermal protection and breathability being the perfect option for medium and high intensity actvities in medium/low temperatures. The inner grid of air channels allows the hot air to flow creating a warm and ventilated interior that wicks moisture quickly.

Made of POLAR STRETCH GRID® fabric, 4 way stretch, highly thermal, comfortable and soft hand feel with a great freedom of movement.

FAST&LIGHT - 311g (XS)

Ultralight seamless headband designed to keep you dry and cool in high intensity activities. It prevents sweat from dropping into the eyes, keepin its position at all times. Built in a double layer of microfibre laser welded, the OS2O Headband dries fast, providing visibility, protection and comfort.

FAST&LIGHT - 18g 

Ultralight seamless headband designed to keep you dry and cool in high intensity activities. It prevents sweat from dropping into the eyes, keepin its position at all times. Built in a double layer of microfibre laser welded, the OS2O Headband dries fast, providing visibility, protection and comfort.

FAST&LIGHT - 18g 

Ultralight seamless headband designed to keep you dry and cool in high intensity activities. It prevents sweat from dropping into the eyes, keepin its position at all times. Built in a double layer of microfibre laser welded, the OS2O Headband dries fast, providing visibility, protection and comfort.

FAST&LIGHT - 18g 

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)

Thermal shocks made of an optimum blend of 4 different yarns. Wool brings thermal protection even when wet. Nylon and Acrylic ensure durability and resistance. Elastane guarantees a perfect fit. The perfect combination of new and old fibers to optimize comfort and performance even in extremely low temperatures.

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)

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