the winter gloves have a PosiTherm lining and a shirred elastic extended knit wrist to keep the heat insulated and the cold out Extreme Durability: the winter gloves are made from pigskin leather making them extremely durable and long lasting compared to other types of leather gloves Extreme Warmth: the winter glove boast a unique design with a zipper pocket on the backside of the hand meant for hand warmers so you can maximize hand warmth. MRTV