The Men's Choko Trail Breaker Nylon Jacket has an outer shell made of waterproof, breathable 400 denier SUPPRATECH rugged oxford with a Teflon protective finish, technically coated for a softer feel. The lining is made of the Weather-Tec system which consists of 14 oz. poly fleece quilted to an 8 oz. "Ultra Soft" polyfill for a combined 22 oz. thermal factor. This jacket has dual storm flap protection, fleece lined adjustable collar, and zippered outer shell pockets lined with brushed cotton for warmth and waterproofed for durability.