Ultra Tec socks combine the softness and comfort of combed cotton with Delcron Hydrotec Fibers for moisture control to keep feet dry. Antimicrobial Properties Reinforced Heel and Toe One Size Fits Most # Pieces In Set: 3 Pair Features: Ribbed, Multi-Pack Shoe Size Range: 6-9 Fiber Content: 75% Cotton, 22% Nylon, 3% Spandex Fabric Description: Knit Care: Machine Wash, Tumble Dry Country of Origin: Imported