Product Details5 pack Material: Cotton, polyester, elastodiene and elastane Features Crew socks Odour control for freshness and hygiene Ribbed elastic welt Arch support Reinforced heel and toe for extra durability Rosso machine toe closure Additional Information Care instructions: Machine wash according to instructions on the care label By choosing our cotton products, you're supporting our investment in Better Cotton's mission. Visit bettercotton. org/massbalance to learn more. This product is sourced via a mass balance system and therefore may not contain Better Cotton.