Patented, warmer pockets over the toes for HEAT FACTORY Footwarmers (see Item X55 Select HF-1953)- one pair of warmers included. Heated Socks are great when standing in cold water, lying in a cold field, waiting for birds in a cold blind, or just sitting at home watching TV on a chilly night. 93 % Acrylic, 7% Polyester, Cushion Arch, Reinforced Heel & 4-Way Stretch Toe Pocket 2 sizes Medium (9-13) and Large (10-13)