Filson Clothing Timber Mackinaw Wool Hunting Coat has two full layers of thick, Mackinaw wool in back, providing extra protection from the elements. Wool has natural insulating qualities, keeping you warm even when wet from rain or strenuous exertion, because wool absorbs up to 30% of its own weight in moisture. The Filson Timber Mackinaw Wool Hunting Coat is warm and practical. Thw two layers of Mackinaw wool in back form a functional pocket the full height of the coat's back. Plus that double layer adds extra warmth and protects you from sharp winds at your back. Length of coat is 31". Dry Clean. 100% virgin wool Mackinaw Cloth, 25 oz. Made in USA.