Take hide that's tanned to withstand the added abuse that cold winter weather brings, replace the inner liner with soft, warm fleece, put an insulating layer of poly-fiber and polypropylene membrane in between, and you have a whole new glove. It's the ultimate cold weather work glove, and it's the warmest, most comfortable winter glove you'll find. TURMOflex multi layers keep moisture outside and insulate with a thick poly fiber membrane. Cotton fleece lining is sweat absorbent for ultimate comfort. Wide body design is 8% roomier than regular size large with sheep thermal insulation. Outer layer of the finest durable and pliable top grain pig skin or side split cowhide with wing thumb for comfort.