OS2O

Base Layer

Men base layer for outdoor sports.

Base Layer

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OS2O Skimo Race Suit Pro

A high-performance ski mountaineering race suit designed in collaboration with the Spanish National Skimo Team, with the goal of delivering maximum performance at the Olympic Games. Developed to meet the highest competitive demands, it combines lightweight construction, ergonomic fit, and advanced functionality.

Made with AeroSkin fabric, featuring four-way stretch, it adapts perfectly to the body, providing maximum comfort, freedom of movement, and optimal thermal regulation/breathability in extreme conditions. Weighing just 319 grams, it is possibly the lightest suit on the market.

It includes a double elastic pocket for quick access to climbing skins and an inner zippered pocket to securely store essentials without compromising aerodynamics. Additionally, it features a quick-access opening in the ventral area for extremely fast storage of skins. The ankle area is reinforced with ultra-light and durable Dyneema® for increased durability, while an upper band and an interchangeable elastic strap ensure a precise fit over the boot, preventing snow from sticking and creating a "clog" effect.

Moreover, a strategically designed rear opening allows compatibility with any ski boot fastening system. A 100% FAST&LIGHT garment, meticulously engineered for top-level competition, optimizing every detail for maximum speed and efficiency on the snow.

FAST&LIGHT - 319g (XS) 

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Price €219.90

    Warmfit Merino 100 Shirt

    The Warmfit 100 Merino T-shirt 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 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 - 183g (S)

    merino wool

    Price €79.90

      Warmfit Merino 100 Shirt

      The Warmfit 100 Merino T-shirt 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 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 - 183g (S)

      merino wool

      Price €79.90

        Warmfit Merino 100 Shirt

        The Warmfit 100 Merino T-shirt 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 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 - 183g (S)

        merino wool

        Price €79.90

          Warmfit Merino 100 Shirt

          The Warmfit 100 Merino T-shirt 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 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 - 183g (S)

          merino wool

          Price €79.90

            Thermal Seamless Shirt

            T-shirt first layer it provides perfect regulation of body temperature. Made from a mixture of polypropylene and elastane seamless construction with thermo-active panels optimized to enhance ventilation in areas of increased sweating. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a ideal clothing for indoor aerobic activities at low temperatures or outdoor at medium temperatures.

            FAST&LIGHT - one hundred and forty-four grams . (S)

            Price €49.90

              Thermal Seamless Shirt

              T-shirt first layer it provides perfect regulation of body temperature. Made from a mixture of polypropylene and elastane seamless construction with thermo-active panels optimized to enhance ventilation in areas of increased sweating. Elastic, soft and adaptable to the body, with unrestricted action adjustment in movements, a ideal clothing for indoor aerobic activities at low temperatures or outdoor at medium temperatures.

              FAST&LIGHT - one hundred and forty-four grams . (S)

              Price €49.90

                SYN Cotton T-Shirt

                T-shirt made with SYN Cotton, fabric 100% recycled whichprovides a good performance in activity plus a soft and fresh touch similar to natural cotton. What. Thanks to its outdoor cut and high elasticity, it allows unrestricted movement, being a multi-purpose garment which can be worn during a medium-intensity activity or daily use.

                FAST&LIGHT - 128 g (S) 

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                Price €34.90

                  SYN Cotton T-Shirt

                  T-shirt made with SYN Cotton, fabric 100% recycled whichprovides a good performance in activity plus a soft and fresh touch similar to natural cotton. What. Thanks to its outdoor cut and high elasticity, it allows unrestricted movement, being a multi-purpose garment which can be worn during a medium-intensity activity or daily use.

                  FAST&LIGHT - 128 g (S) 

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                  Price €34.90

                    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

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                    Price €34.90

                      Racing Summit T-Shirt 2024

                      Technical and ultra-light shirt without sleeves designed for keep you cool and dry in competitions and high demand trainings. Made in fabric of Cool2Dry® pierced that thanks to its air channels provides extra ventilation and improves heat dissipation in moments of great effort; in addition, it offers a soft touch in contact with the skin. Ideal for intense activities in high temperatures.

                      FAST&LIGHT - 60g

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                      Price €32.90

                        Racing Summit T-Shirt 2024

                        Technical and ultra-light shirt without sleeves designed for keep you cool and dry in competitions and high demand trainings. Made in fabric of Cool2Dry® pierced that thanks to its air channels provides extra ventilation and improves heat dissipation in moments of great effort; in addition, it offers a soft touch in contact with the skin. Ideal for intense activities in high temperatures.

                        FAST&LIGHT - 60g

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                        Price €32.90

                          Airlite Shirt

                          The AIRLITE T-Shirt is an ultra-lightweight, seamless shirt designed for maximum comfort and performance. Made from 100% Dryarn®, a cutting-edge polypropylene fiber, this shirt excels in breathability and thermal insulation, keeping your body dry even during intense activities. Weighing just 75 grams, it’s perfect as a base layer in cold conditions or as an outer layer in mild or warm climates. This shirt is ideal for trail running, mountaineering, and skimo, where weight and performance are crucial.

                          FAST&LIGHT - 75g (S)

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                          Price €32.90

                            Airlite Shirt

                            The AIRLITE T-Shirt is an ultra-lightweight, seamless shirt designed for maximum comfort and performance. Made from 100% Dryarn®, a cutting-edge polypropylene fiber, this shirt excels in breathability and thermal insulation, keeping your body dry even during intense activities. Weighing just 75 grams, it’s perfect as a base layer in cold conditions or as an outer layer in mild or warm climates. This shirt is ideal for trail running, mountaineering, and skimo, where weight and performance are crucial.

                            FAST&LIGHT - 75g (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

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