This hoody is windproof, a good layer, and is made of lightweight nylon ripstop shell fabric that is treated with a durable water repellent (DWR) finish that sheds unwanted moisture and resists stains 40 g PrimaLoft® Gold Active stretch insulation is highly breathable and offers reliable warmth Harness-compatible zippered hand pockets; zippered chest pocket Elastic hood, cuffs and hem help seal out drafts Fabric is Pertex Quantum Air 20-denier stretch ripstop: 59% recycled nylon/41% nylon