Gore-Tex, waterproof outer, down insulated, zipper + button closure, inner and outer pockets, is warm in below freezing temps. Size Small (true to size) Black Insulation is 90% Duck Down, 10% Feathers Shell is 100% Polyester Lining is 100% Polyamide Purchased from the Woolrich website a few years ago and only wore for 2 winters since I decided I’d be more comfortable sizing up. Excellent condition (potential for very minor scuff or dirt marks I didn’t catch, but definitely nothing that can’t be cleaned off).