Dickies Men's 2 Pack Cotton Thermal Casual Boot Crew Socks 63% Cotton/23% Acrylic/12% Polyester/1% Nylon/1% Spandex Machine Wash Soft cotton combined with acrylic fibers provide soft comfort and moisture control to keep feet dry and warm Heavy cushion throughout foot and leg for added comfort Boot length provides superior warmth Reciprocated heel and toe for superior fit and comfort Full cushion comfort, reinforced heel and toe for added durability