OS2O FAST&LIGHT

TRAIL RUNNING

Technical clothing for running and competing in the mountains

There are 107 products.

Showing 1-20 of 107 item(s)
O2 Waterproof Trail Speed Zip Jacket 30k Woman O2 Waterproof Trail Speed Zip Jacket 30k Woman

O2 Waterproof Trail Speed Zip Jacket 30k Woman

The O2 Waterproof SPEED ZIP is a competition jacket designed for those women who seek maximum functionality with minimum weight, ideal for athletes looking to save precious seconds during their races. Its innovative design allows it to be worn directly over a backpack or trail vest thanks to a rear zippered gusset that perfectly adapts to the size of the gear, ensuring freedom of movement and uninterrupted protection.

Weighing only 138 grams, this jacket combines extreme lightness with outstanding performance. Made with the O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and an exceptional breathability of MVTR: 30,000 g/(m²·24h), ideal for high-intensity activities in adverse conditions. Fully taped seams, YKK™ Coil AquaGuard® zippers, and its packable design make the O2 Waterproof SPEED ZIP an essential choice for the most demanding competitors. Its hood with a 3-point adjustment system and flexible visor provides additional protection against wind and rain, while its technical cut is designed to optimize performance in every second of the race.

Perfect for those who value every detail, this jacket offers advanced technology and functional features designed to maximize efficiency in the mountains, even in the most challenging conditions.



FAST&LIGHT - 138g (XS)

Price €189.90
    O2 Waterproof Trail Speed Zip Jacket 30k - Royal O2 Waterproof Trail Speed Zip Jacket 30k - Royal

    O2 Waterproof Trail Speed Zip Jacket 30k - Royal

    The O2 Waterproof SPEED ZIP is a competition jacket designed for those who seek maximum functionality with minimum weight, ideal for athletes looking to save precious seconds during their races. Its innovative design allows it to be worn directly over a backpack or trail vest thanks to a rear zippered gusset that perfectly adapts to the size of the gear, ensuring freedom of movement and uninterrupted protection.

    Weighing only 167 grams, this jacket combines extreme lightness with outstanding performance. Made with the O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and an exceptional breathability of MVTR: 30,000 g/(m²·24h), ideal for high-intensity activities in adverse conditions. Fully taped seams, YKK™ Coil AquaGuard® zippers make the O2 Waterproof SPEED ZIP an essential choice for the most demanding competitors. Its hood with a 3-point adjustment system and flexible visor provides additional protection against wind and rain, while its technical cut is designed to optimize performance in every second of the race.

    Perfect for those who value every detail, this jacket offers advanced technology and functional features designed to maximize efficiency in the mountains, even in the most challenging conditions.


    FAST&LIGHT - 167g (S)

    Price €189.90
      O2 Waterproof Trail Speed Zip Jacket 30k - Goldmedal O2 Waterproof Trail Speed Zip Jacket 30k - Goldmedal

      O2 Waterproof Trail Speed Zip Jacket 30k - Goldmedal

      The O2 Waterproof SPEED ZIP is a competition jacket designed for those who seek maximum functionality with minimum weight, ideal for athletes looking to save precious seconds during their races. Its innovative design allows it to be worn directly over a backpack or trail vest thanks to a rear zippered gusset that perfectly adapts to the size of the gear, ensuring freedom of movement and uninterrupted protection.

      Weighing only 167 grams, this jacket combines extreme lightness with outstanding performance. Made with the O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and an exceptional breathability of MVTR: 30,000 g/(m²·24h), ideal for high-intensity activities in adverse conditions. Fully taped seams, YKK™ Coil AquaGuard® zippers make the O2 Waterproof SPEED ZIP an essential choice for the most demanding competitors. Its hood with a 3-point adjustment system and flexible visor provides additional protection against wind and rain, while its technical cut is designed to optimize performance in every second of the race.

      Perfect for those who value every detail, this jacket offers advanced technology and functional features designed to maximize efficiency in the mountains, even in the most challenging conditions.


      FAST&LIGHT - 167g (S)

      Price €189.90
        O2 Waterproof Trail PRO Jacket 30k - All Black O2 Waterproof Trail PRO Jacket 30k - All Black

        O2 Waterproof Trail PRO Jacket 30k - All Black

        The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for those seeking to combine lightness, breathability, and protection in trail running. Weighing just 148 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

        Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

        The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

        Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.


        FAST&LIGHT - 148g (S)

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        Price €169.90
          O2 Waterproof Trail PRO Jacket 30k - Garnet O2 Waterproof Trail PRO Jacket 30k - Garnet

          O2 Waterproof Trail PRO Jacket 30k - Garnet

          The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for those seeking to combine lightness, breathability, and protection in trail running. Weighing just 148 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

          Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

          The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

          Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.


          FAST&LIGHT - 148g (S)

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          Price €169.90
            O2 Waterproof Trail PRO Jacket 30k - Royal O2 Waterproof Trail PRO Jacket 30k - Royal

            O2 Waterproof Trail PRO Jacket 30k - Royal

            The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for those seeking to combine lightness, breathability, and protection in trail running. Weighing just 148 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

            Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

            The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

            Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.


            FAST&LIGHT - 148g (S)

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            Price €169.90
              O2 Waterproof Trail PRO Jacket 30k - Goldmedal O2 Waterproof Trail PRO Jacket 30k - Goldmedal

              O2 Waterproof Trail PRO Jacket 30k - Goldmedal

              The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for those seeking to combine lightness, breathability, and protection in trail running. Weighing just 148 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

              Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

              The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

              Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.


              FAST&LIGHT - 148g (S)

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              Price €169.90
                O2 Waterproof Trail PRO Jacket 30k Woman - Ocean O2 Waterproof Trail PRO Jacket 30k Woman - Ocean

                O2 Waterproof Trail PRO Jacket 30k Woman - Ocean

                The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for thoseseeking to combine lightness, breathability, and protection in trail running. Weighing just 127 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

                Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

                The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

                Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.

                FAST&LIGHT - 127g (XS)

                Price €169.90
                  O2 Waterproof Trail PRO Jacket 30k Woman - Garnet O2 Waterproof Trail PRO Jacket 30k Woman - Garnet

                  O2 Waterproof Trail PRO Jacket 30k Woman - Garnet

                  The O2 Waterproof Trail 30K PRO Jacket is the ultimate jacket for thoseseeking to combine lightness, breathability, and protection in trail running. Weighing just 127 grams, this waterproof jacket is 100% windproof and designed to perform at its best in adverse conditions.

                  Made with the innovative O2 30K 2.5-layer membrane, it guarantees 20,000 mm waterproofing and exceptional breathability of MVTR: 30,000 g/(m²·24h), ensuring comfort even during high-intensity activities (see test). Fully taped seams, waterproof YKK™ Coil AquaGuard® zippers, and the ability to pack into its own pocket make it an easy and practical choice.

                  The hood features a 3-point adjustment system and a flexible visor for additional protection, while its ultralight and technical design is tailored to optimize performance for mountain runners.

                  Perfect for rainy or windy days, this jacket combines advanced technology with functional details to ensure an unbeatable trail running experience.

                  FAST&LIGHT - 127g (XS)

                  Price €169.90
                    EVO StretchShell Jacket - Blue EVO StretchShell Jacket - Blue

                    EVO StretchShell Jacket - Blue

                    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)

                    Premio Mejor Chaqueta de membrana Desnivel 2017

                    Price €129.90
                      EVO StretchShell Jacket - Black - Blue EVO StretchShell Jacket - Black - Blue

                      EVO StretchShell Jacket - Black - Blue

                      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)

                      Premio Mejor Chaqueta de membrana Desnivel 2017

                      Price €129.90
                        EVO StretchShell Jacket Woman - Sea Spectra EVO StretchShell Jacket Woman - Sea Spectra

                        EVO StretchShell Jacket Woman - Sea Spectra

                        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)

                        Premio Mejor Chaqueta de membrana Desnivel 2017

                        Price €129.90
                          SPEEDPACK Alpine 16L SPEEDPACK Alpine 16L

                          SPEEDPACK Alpine 16L

                          The SPEEDPACK Alpine 16L technical vest was developed for high-mountain activities under the FAST&LIGHT philosophy. With increased capacity and a hybrid design between vest and backpack, it offers the perfect balance of lightness, fit, and load-carrying ability.

                          Its ripstop nylon construction ensures resistance to abrasion, tearing, and moisture, without adding unnecessary weight. The shoulder straps, shared with other models in the SPEEDPACK line, feature multiple easy-access pockets for organization and hydration (holds two flasks) without breaking stride.

                          The rear section is designed for secure, wide access to the 16-liter storage area via a Fold-up top closure, ideal for carrying technical gear, extra clothing, or larger hydration systems.

                          The FlexControl System allows full customization of front adjustment, including strap tension, position, and number of anchor points, ensuring a precise, comfortable, bounce-free fit even on technical terrain.

                          Its hybrid design combines the comfort and lightness of a trail vest with the functionality of a technical mountain pack, making it an ideal choice for fast alpine traverses (without ice axe or crampons), light alpinism, or long, technical outings.


                          FAST&LIGHT - 211g (S/M)

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                          Price €119.90
                          • New
                          O2 Waterproof Full Zipper Pants 30k O2 Waterproof Full Zipper Pants 30k

                          O2 Waterproof Full Zipper Pants 30k

                          Ultralight waterproof, breathable, and windproof pants designed for ski mountaineering and trail running in rainy or snowy conditions. Made with the O2 2.5-layer membrane, waterproof (20,000mm H2O column) and highly breathable (30,000g/m²·24h), they provide maximum protection and comfort for FAST&LIGHT activities. The design features 100% fully taped seams and full-length YKK™ side zippers, allowing quick on-and-off without removing ski mountaineering or trail running boots. They include a dual boot adjustment system, with a zipper and an elastic cord with a tanka, ensuring a perfect and secure fit. Their ergonomic cut supports the natural movement of the knees, providing freedom and comfort with every step. Additionally, they are packable into their own pocket, making them an essential garment for high-intensity competitions and training in adverse weather conditions.

                          FAST&LIGHT - 161g (XS)

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                          Price €119.90
                            SPEEDPACK Trail Vest 12L - Black SPEEDPACK Trail Vest 12L - Black

                            SPEEDPACK Trail Vest 12L - Black

                            The SPEEDPACK 12L is designed to meet the demands of long-distance trail running and high-mountain adventures, where load capacity, comfort, and on-the-go accessibility are key. With a larger volume and optimized load distribution, it offers exceptional stability without compromising lightness or freedom of movement.

                            Constructed with FASTGRID, a lightweight, breathable and high-performance mesh fabric, it molds naturally to the body, even when fully loaded. The ergonomic design integrates multiple strategically placed pockets, allowing efficient gear access without stopping or shifting weight.

                            It features a wide main compartment with a direct-access YKK® zip entry and a versatile internal storage area. An adjustable compression system, accessible from the front pocket, allows stabilization of internal volume and can be reconfigured to anchor gear at the back or sides, depending on terrain and preference.

                            The FlexControl System on the front provides customizable adjustment of strap tension, placement, and number of anchor points for a bounce-free fit tailored to any body type or intensity level. Ideal for long training sessions, ultra-distance races, or high-output mountain days, the SPEEDPACK 12L delivers maximum functionality in a lightweight and streamlined design.


                            FAST&LIGHT - 191g (XS)

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                            Price €114.90
                            • New
                            SPEEDPACK Trail Vest 12L - Seaport SPEEDPACK Trail Vest 12L - Seaport

                            SPEEDPACK Trail Vest 12L - Seaport

                            The SPEEDPACK 12L is designed to meet the demands of long-distance trail running and high-mountain adventures, where load capacity, comfort, and on-the-go accessibility are key. With a larger volume and optimized load distribution, it offers exceptional stability without compromising lightness or freedom of movement.

                            Constructed with FASTGRID, a lightweight, breathable and high-performance mesh fabric, it molds naturally to the body, even when fully loaded. The ergonomic design integrates multiple strategically placed pockets, allowing efficient gear access without stopping or shifting weight.

                            It features a wide main compartment with a direct-access YKK® zip entry and a versatile internal storage area. An adjustable compression system, accessible from the front pocket, allows stabilization of internal volume and can be reconfigured to anchor gear at the back or sides, depending on terrain and preference.

                            The FlexControl System on the front provides customizable adjustment of strap tension, placement, and number of anchor points for a bounce-free fit tailored to any body type or intensity level. Ideal for long training sessions, ultra-distance races, or high-output mountain days, the SPEEDPACK 12L delivers maximum functionality in a lightweight and streamlined design.


                            FAST&LIGHT - 191g (XS)

                            YKK%20140.jpgfastgrid_os2o.jpglogo_speedpack.webp

                            Price €114.90
                            • New
                            O2 Waterproof Trail PRO Pants 30k O2 Waterproof Trail PRO Pants 30k

                            O2 Waterproof Trail PRO Pants 30k

                            The O2 Waterproof Trail 30K Pants are ultralight, waterproof, breathable, and windproof overpants designed specifically for trail running. Made with the 2.5-layer O2 membrane, they provide outstanding waterproof protection (20,000 mm H2O column) and exceptional breathability (30,000 g/m²·24h). Featuring a comfortable fit that allows natural knee movement without restrictions, they are equipped with an innovative ankle adjustment system, including zippers for easy on/off without removing shoes, and a front toggle that can attach to shoelaces to prevent unwanted movement, even during high-intensity activities. With fully taped seams and YKK™ Coil waterproof zippers, these pants are packable into their own rear pocket, making them ideal for high-intensity training and competitions in the rain.

                            FAST&LIGHT - 121g (XS)

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                            Price €109.90
                              EVO StretchShell PRO Pants - Black EVO StretchShell PRO Pants - Black

                              EVO StretchShell PRO Pants - Black

                              Designed for FAST&LIGHT activities in cold climates, the EVO PRO Pants combine lightweight performance, functionality, and durability. Their zonal construction optimizes each area of the body: the front panel is made from StretchShell PRO, a waterproof (15,000 mm), highly breathable (30,000 g/m²·24h), and elastic fabric, while the rear panel features elastic X-Stretch fabric, providing an ergonomic fit, superior comfort, and excellent breathability even during high-intensity activities.

                              The Action Fit pattern ensures total freedom of movement, while the elastic waistband adapts perfectly without restrictions. They include mountain-oriented details such as an easy-access thigh pocket, Kevlar reinforcement on the boot's interior, long zippers with elastic fabric panels for a perfect boot fit, and eyelets that allow for adding a strap under the boot.

                              Perfect for those seeking versatility, performance, and lightness in the most demanding conditions.  


                              FAST&LIGHT - 289g (S)

                              Price €99.90
                                EVO StretchShell PRO Pants - Blue EVO StretchShell PRO Pants - Blue

                                EVO StretchShell PRO Pants - Blue

                                Designed for FAST&LIGHT activities in cold climates, the EVO PRO Pants combine lightweight performance, functionality, and durability. Their zonal construction optimizes each area of the body: the front panel is made from StretchShell PRO, a waterproof (15,000 mm), highly breathable (30,000 g/m²·24h), and elastic fabric, while the rear panel features elastic X-Stretch fabric, providing an ergonomic fit, superior comfort, and excellent breathability even during high-intensity activities.

                                The Action Fit pattern ensures total freedom of movement, while the elastic waistband adapts perfectly without restrictions. They include mountain-oriented details such as an easy-access thigh pocket, Kevlar reinforcement on the boot's interior, long zippers with elastic fabric panels for a perfect boot fit, and eyelets that allow for adding a strap under the boot.

                                Perfect for those seeking versatility, performance, and lightness in the most demanding conditions.  


                                FAST&LIGHT - 289g (S)

                                Price €99.90
                                  SPEEDPACK Trail Vest 5L - Black SPEEDPACK Trail Vest 5L - Black

                                  SPEEDPACK Trail Vest 5L - Black

                                  The SPEEDPACK 5L vest represents an advanced interpretation of the FAST&LIGHT philosophy, shaped by years of experience in trail running and technical gear design. Its lightweight construction, adaptability, and well-thought-out pocket system make it an ideal choice for high-intensity races and training sessions where every second matters.

                                  Made with high-performance porous technical fabric, it is lightweight, breathable, and highly adaptable to the body, offering a natural fit without restricting freedom of movement. The shoulder straps feature strategically placed pockets to carry essential items without compromising balance or comfort.

                                  The pocket layout is optimized for quick access during activity, minimizing interruptions and improving race efficiency. The vest also features the FlexControl System, a customizable front adjustment system that allows precise control of tension, placement, and number of anchor points, adapting to the runner’s body and terrain. Designed for both competition and training, it is ideal for short to mid-distance races, delivering capacity, functionality, and stability in a minimalist, ultralight format.


                                  FAST&LIGHT - 162g (XS)

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                                  Price €99.90
                                  • New