Heat Holders® Women's Heather Stripe ULTRA LITE™ Socks are 3X warmer than the average cotton sock in a lightweight profile, ideal for wearing in dress shoes or tight-fitting shoes. The intensively brushed inner pile is super soft and traps warm air next to your feet keeping them warmer for longer on cold days. # Pieces In Set: 1 Pair Features: Insulated Shoe Size Range: 5-9 Fiber Content: 89% Acrylic, 10% Nylon, 1% Elastane Fabric Description: Knit Care: Machine Wash, Dry Flat Country of Origin: Imported