Dickies Men's 4 Pack Wool Blend Boot Crew Socks 30% Cotton, 30% Acrylic, 20% Wool, 18% Polyester, 2% Nylon Imported Machine Wash Premium wool fiber blend provides superior warmth Moisture control fibers keep feet dry Heavy cushion throughout foot and leg for added comfort Boot length provides superior warmth Reinforced and reciprocated heel and toe for superior fit and full cushion comfort