Gerry Vault Technologies Outdoor Performance Insulated Jacket for Men Shell: 90% polyester, 10% spandex with 100% polyester backing. Lining: 100% nylon. Body Filler: 100% polyester. Stretches for maximum comfort and superior fit Water resistant to help you keep dry Insulated layer for added warmth Detachable hood with adjustable draw cord Adjustable velcro wrist strap