Heat holders lite® socks are 5x warmer than the average cotton sock, super soft, and comfortable. Keep your feet warm on cold days with heath holders®, makers of the warmest thermal sock™. No more cold feet!® with a tog rating of 1.7, heat holders lite® socks are made with advanced thermal yarns which are extremely soft and warm. # Pieces In Set: 1 Pair Features: Breathable, Insulated, Moisture Wicking, Stretch Fabric Shoe Size Range: 7-12 Fiber Content: 93% Acrylic, 6% Polyester, 1% Elastane Fabric Description: Thermal Care: Machine Wash, Tumble Dry Country of Origin: Imported