The La Sportiva Odyssey GORE-TEX waterproof jacket uses the lightest GORE-TEX active membrane on the market, this extremely lightweight outer layer offers protection against wind and water. It has an integrated internal storage pocket and its highly reflective fabric allows you to be seen in low light conditions. The bluesign concept is built around five principles: resource productivity, consumer safety, emissions to the atmosphere, emissions in the water and occupational health and safety.