OS2O

TRAIL RUNNING

Technical clothing for running and competing in the mountains

TRAIL RUNNING

Active filters

  • Size: L (44-47.5)
  • Size: S/M
  • Size: L/XL
  • Size: 300 ml

Compression Toesocks

Medium compression toe socks designed to maximize performance in trail running and outdoor sports. With an anatomical 5-toe design, they allow for natural toe separation, helping to prevent blisters and providing greater freedom of movement, essential on uneven terrain. The graduated compression along the entire leg improves circulation, reduces muscle fatigue, and provides additional support, ensuring stability with every step and aiding muscle recovery after long distances.

Made from high-quality fibers, these socks effectively manage moisture and heat, keeping feet dry and cool in demanding conditions. Breathable mesh in key areas optimizes ventilation, while reinforcements in high-impact areas, such as the heel and toes, enhance durability and abrasion resistance. With an ergonomic fit, these socks are the ideal choice for those seeking stability, compression, and protection on any outdoor adventure.

FAST&LIGHT - 25g (S)

lycra.jpgnylon.jpg

Price €24.90

    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

        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

              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

                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

                    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

                      TRAIL Toesocks

                      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.


                      Price €11.90

                        TRAIL Toesocks

                        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.


                        Price €11.90

                          TRAIL Toesocks

                          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.


                          Price €11.90

                            Toesocks RUN

                            Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                            Producto destacado Especial Material Desnivel 2017

                            Price €9.90

                              Toesocks RUN

                              Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                              Producto destacado Especial Material Desnivel 2017

                              Price €9.90

                                Toesocks RUN

                                Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                                Producto destacado Especial Material Desnivel 2017

                                Price €9.90

                                  Toesocks RUN

                                  Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                                  Producto destacado Especial Material Desnivel 2017

                                  Price €9.90

                                    Toesocks RUN

                                    Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                                    Producto destacado Especial Material Desnivel 2017

                                    Price €9.90

                                      Toesocks RUN

                                      Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                                      Producto destacado Especial Material Desnivel 2017

                                      Price €9.90

                                        Toesocks RUN

                                        Running and Trail Running Technical Toesocks. The RUN! Toesocks provide freedom of movement while preventing blisters as it eliminates moisture and friction between the toes. Its high component of Nylon® and Coolmax® guarantees good moisture management, resistance and outstanding durability on any terrain and shoe.

                                        Producto destacado Especial Material Desnivel 2017

                                        Price €9.90

                                          ULTRA Toesocks

                                          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.

                                          Price €14.90

                                            ULTRA Toesocks

                                            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.

                                            Price €14.90

                                              Shopping Cart

                                              Back to shop

                                              Cart is empty.

                                              Account

                                              Account

                                              No account?
                                              Create an Account