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OS2O

Base Layer

Men base layer for outdoor sports.

Base Layer

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Warmlite Merino Shirt

The Warmlite Merino Shirt combines the best of natural and synthetic fibers to offer high thermal capacity, great moisture wicking and a very soft touch. The Warmlite Merino is made from merino wool, nylon core spun and elastane offering the best performance as a baselayer in a clothing system in cold days or as a single layer in high-intensity activities.

FAST&LIGHT - 183g (S)

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Price €69.90

Airfit Plus Shirt

High performance first layer t-shirt. Thanks to its micro-perforated polypropylene and elastane fabric, it provides a perfect balance between thermal capacity and breathability. Extremely elastic and adaptable it offers an action fit without restrictions in the movements of the arms or head. Integrated diver-type hood, which completely covers the neck, ideal for low temperatures.

FAST&LIGHT - 143g (S/M)

Price €44.90

Ultra Lite T-Shirt

The Ultralight T-shirt is designed to keep you cool and dry even during high intensity activities. Made with a breathable elastic microfiber fabric, the Ultra Lite T-Shirt provides a perfect fit, good breathability and fast drying properties. A light and functinal t-shirt ideal for trail running in high temperatures.

FAST&LIGHT - 79g (S)
OS2O made in Spain

Price €34.90

Ultra Lite T-Shirt

The Ultralight T-shirt is designed to keep you cool and dry even during high intensity activities. Made with a breathable elastic microfiber fabric, the Ultra Lite T-Shirt provides a perfect fit, good breathability and fast drying properties. A light and functinal t-shirt ideal for trail running in high temperatures.

FAST&LIGHT - 79g (S)
OS2O made in Spain

Price €34.90

Lines F&L Technical T-Shirt

Trail Running ultralight technical T-shirt designed to keep you dry and cool during intense activities. Thanks to its fabric, Cool2Dry® 35, the F&L Technical T-Shirt is elastic, lightweight and breathable, making it ideal for trail running in the summer warmest days when breathability is paramount. 

FAST&LIGHT - 78 g (S)

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Price €32.90

Arrow F&L Technical T-Shirt

Trail Running ultralight technical T-shirt designed to keep you dry and cool during intense activities. Thanks to its fabric, Cool2Dry® 35, the F&L Technical T-Shirt is elastic, lightweight and breathable, making it ideal for trail running in the summer warmest days when breathability is paramount. 

FAST&LIGHT - 78 g (S)

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Price €32.90

Cervino F&L Technical T-Shirt

Trail Running ultralight technical T-shirt designed to keep you dry and cool during intense activities. Thanks to its fabric, Cool2Dry® 35, the F&L Technical T-Shirt is elastic, lightweight and breathable, making it ideal for trail running in the summer warmest days when breathability is paramount.

FAST&LIGHT - 78 g (S)

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Price €32.90

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)
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Price €32.90

Ultra Lite Tank

The Ultralight Lite Tank is designed to keep you cool and dry even during high intensity activities. Made with a breathable elastic microfiber fabric, the Air Lite T-Shirt provides a perfect fit, a nice soft touch and fast drying properties.

FAST&LIGHT - 65 g (S)

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Price €29.90

Upwards Organic T-Shirt

Light and cool t-shirt made of 100% organic cotton. Great elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for trekking, climbing or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

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Price €27.90

Upwards Organic T-Shirt

Light and cool t-shirt made of 100% organic cotton. Great elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for trekking, climbing or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

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Price €27.90

Garmo Organic T-Shirt

Inspired by the majesticness of Garmo Negro (3051m) in the Tena Valley we have designed the Garmo T-shirt. A very light and cool t-shirt made of 100% organic cotton. Thanks to elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for climbing, medium-intensity activities or just to look cool after running the stunning Trail Valle de Tena.

FAST&LIGHT - 132g (S)

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Price €27.90

Garmo Organic T-Shirt

Inspired by the majesticness of Garmo Negro (3051m) in the Tena Valley we have designed the Garmo T-shirt. A very light and cool t-shirt made of 100% organic cotton. Thanks to elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for climbing, medium-intensity activities or just to look cool after running the stunning Trail Valle de Tena.

FAST&LIGHT - 132g (S)

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Price €27.90

Mountain T-Shirt

Light and cool t-shirt made of 100% organic cotton. Great elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for trekking, climbing or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

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Price €27.90

Mountain T-Shirt

Light and cool t-shirt made of 100% organic cotton. Great elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for trekking, climbing or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

OEKO-TEX® STANDARD 100.jpgORGANIC CONTENT STANDARD 100.jpgfair_wear.jpg

Price €27.90

Oroel T-Shirt

Light and cool t-shirt made of 100% organic cotton. Thanks to elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for climbing, medium-intensity activities or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

OEKO-TEX® STANDARD 100.jpgORGANIC CONTENT STANDARD 100.jpgfair_wear.jpg

Price €27.90

Oroel T-Shirt

Light and cool t-shirt made of 100% organic cotton. Thanks to elasticity and lightness (145g./m2) it is extremely comfortable, even on the hottest days in the summer. An ideal garment for climbing, medium-intensity activities or just to look cool in your OS2O colors in the city.

FAST&LIGHT - 132g (S)

OEKO-TEX® STANDARD 100.jpgORGANIC CONTENT STANDARD 100.jpgfair_wear.jpg

Price €27.90

T-Shirt Flex

Light, highly breathable and elastic shirt for trail running and alpinism. Seamless construction in Polypropylene Dryarn® fast dry even under very hot and humid conditions. Good resistance against friction with rocks. A high performance garment in a basic and functional design, a must for outdoor sports in medium and high temperatures.

FAST&LIGHT - 106g (S)


OS2O hecho en EspañaDryan

Price €27.90

T-Shirt Flex

Light, highly breathable and elastic shirt for trail running and alpinism. Seamless construction in Polypropylene Dryarn® fast dry even under very hot and humid conditions. Good resistance against friction with rocks. A high performance garment in a basic and functional design, a must for outdoor sports in medium and high temperatures.

FAST&LIGHT - 106g (S)


OS2O hecho en EspañaDryan

Price €27.90

T-Shirt Flex

Light, highly breathable and elastic shirt for trail running and alpinism. Seamless construction in Polypropylene Dryarn® fast dry even under very hot and humid conditions. Good resistance against friction with rocks. A high performance garment in a basic and functional design, a must for outdoor sports in medium and high temperatures.

FAST&LIGHT - 106g (S)


OS2O hecho en EspañaDryan

Price €27.90

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