76% Combed Cotton, 22% Polyester, 2% Elastane. Heavy duty boot sock with contrast logo. High density heel and toe protection. High stretch top for ease of wear with minimal compression. Alignment points prevent sock movement. Anatomical Y heel for improved fit. Soft feel, durable fabric, warmth. Extra resistant toe and heel for use with steel toe boots. Comfort top with ANTI-SLIP in the leg. Machine washable at 40 degrees / 2 PAIR PACK.