White Sierra Slider Insulated Pant Womens Outer Material: 100% Taslan Nylon--A durable fine-filament nylon fiber that is lightweight. Lining: 100% Nylon Taffeta--Offers you a windproof and breathable lining. Insulation: 100% Polyester --A lightweight synthetic insulation that helps to trap your warmth in. Water Resistance: Waterproof--Treated fabrics and specially designed zippers, closures, and seams completely seal out water and rain. Snow Cuff--Prevents powder from entering the pant leg.