White Sierra Women's Insulated Snow Bib (Extended Sizes) Shell: 100% polyester/1% rayon Patchwork Tweed Plaid Woven; Lining: 100% polyester rip stop woven Imported Waterproof, breathable fabric to keep you warm and dry on the slopes. Polyfill insulation provides the added warmth you need for those long chair lift rides. Adjustable shoulder straps provide excellent fit and functionality.