No-show design, perfect for wearing with your Alpargatas or other low profile shoes Silicone heel grip that keeps your socks in place Seamless toe closure for a smooth, friction-free fit Pique arch band for added comfort and support To care for your socks, machine wash warm and avoid bleaching, ironing, and high heat 39% Nylon, 28% Lyocell, 28% Cotton, 5% Elastane Your TOMS purchase helps support children's education, health and well-being, giving kids everywhere the gift of better tomorrows.