Heat Holders® Women's Willow Block Twist LITE™ Socks are 5X warmer than the average cotton sock in a medium thick profile, ideal for staying comfortable and warm in casual shoes and boots! The intensively brushed inner pile is super soft and traps warm air next to your feet keeping them warmer for longer on the coldest of days. # Pieces In Set: 1 Pair Features: Insulated Shoe Size Range: 5-9 Fiber Content: 93% Acrylic, 6% Polyester, 1% Elastane Fabric Description: Knit Care: Machine Wash, Dry Flat Country of Origin: Imported