Exterior: 15D 33 g/m(2)/1.7 oz lyd, 100% nylon with DWR finish. Fill: 11.5 g/ft(2) PrimaLoft ThermoBall synthetic insulation. Secure-zip hand pockets. Stows in left hand pocket. Drawcord and toggles at hem. Durable water repellent: DWR is applied to the face of the fabric to provide the first line of defense against wet weather. Insulated: Insulation traps hot air for reduced heat loss and increased warmth. Packable: Highly compressible layer for emergency use or travel.