Ultralight and Made From Sustainable Materials: This Jacket From OS2O Is Reminiscent of Its Visionary Designer Oswaldo Rivera

Weighing just 330 grams, the Oswald Thermore Ecodown (Fast&Light) jacket is designed for fast-paced alpine outdoor activities. Both the construction and material selection focus on weight reduction, high breathability and thermal performance, combining these functional requirements with increasingly important sustainability aspects.

The jacket is made from two innovative Gelanots fabrics developed specifically for this project, as well as two different Thermore Ecodown synthetic insulation materials. Using body mapping and thermography techniques, all materials are strategically placed on the body where their specific properties are needed.

Thus, the jacket is equipped with a puffier, down-feel, and warmer padding in the chest area, upper arms and back, while a lighter and more robust material was chosen for the underarms and hood. On the shoulders and forearms, OS2O uses a nylon ripstop fabric that has been reinforced with a Zxion fiber. Zxion is a polyarylate fiber with excellent tensile strength and elasticity.

The synthetic Thermore Ecodown filling feels like real down, is just as ultralight, but unlike down, retains its excellent loft even when wet. The combination of all selected components results in an excellent warmth-to-weight ratio of the jacket.

Other details have also been carefully placed to create a highly functional garment for fast alpinism: for example, the jacket is equipped with internal pockets for essentials, a pocket for a 500 ml water flask and a pocket for energy bars and a second pair of gloves. Thanks to a YKK double pull zipper, the jacket guarantees instant access to the essentials when moving fast without having to stop.

In addition, the jacket is compatible with climbing harness and helmet and has all the necessary adjustments for a perfect fit.

The jacket contains 95 percent recycled material. This includes the Thermore Ecodown filling, which is made from 100 percent recycled PTE bottles and is therefore animal-free. All other fabrics and ingredients are made from 90 percent recycled PFC-free material, including the YKK zippers. Only the Zxion reinforcement fibers are expected to be made of recyclate in future versions.

OS2O offers a lifetime warranty against manufacturing defects. To extend product life, OS2O places a lot of emphasis on proper care. For this purpose, the team prepares detailed care instructions for each product. In addition, the company offers a repair service.

The jacket also honors the memory of OS2O designer Oswaldo Rivera, who sadly passed away last July in an accident in the Spanish mountains. This jacket was his last project whose vision was to create an animal-free down jacket made from fully recycled material, while keeping the essence of FAST&LIGHT: highly functional and extremely lightweight.

• sophisticated details and body mapping technology with an excellent warmth-to-weight ratio
• high percentage of recycled materials
• homage to the late designer Oswaldo Rivera