As light as a feather. This ultralight wind jacket can be packed down small and stored in your back pocket; put it on for protection that’s hard on the wind but easy on the environment. The jacket is made from environmentally friendly, bluesignA certified primary material, the athletic cut guarantees streamlined aerodynamics. This product was manufactured with Eco Finish and is eco-friendly, water repellent and fluorocarbon-free (PFC-free).