Walls Men's Big Zero-Zone Benbrook Insulated Muscle Back Jacket 100% Cotton Imported Machine Wash Walls dry iq water repellent finish Walls muscle back technology uses a large band of elastic across the back to increase your range of movement, four-piece sleeves with articulated elbow patch Comfort rib-knit waistband and cuffs, three-piece hood with adjustable draw cord Zippered chest pocket, large front patch pockets, interior patch pocket with security closure Warm polyester sherpa lining in the body and hood