The 2022 Descente Martin Ski Jacket is a lightweight jacket in Matte 4way Stretch fabric, with a lining of eco-friendly OCTA CPCP, which creates warmth without insulation, using special lightweight hollow threads that trap dead air to create an effective heat shield. It feels about half the weight of polyester fibre of the same diameter. It is also highly permeable, allowing easy passage of water and sweat for a dry feel, and is comfortable even with layering.