A soft sheepskin leather mitten is lined with a warm cozy Hi-Loft Sherpa. Sherpa lining is a thick and soft lining made from polyester high-loft fleece. It is lightweight, warm and thicker than many other polyester linings. It also helps wick moisture away from the skin to keep you dry and comfortable, making these mittens particularly good for being active outdoors. SIZING HINT: These mittens run true to size.