ZenToes Compression Socks were designed with unique 3D knitting technology to provide support and compression around the arch of the foot. The graduated compression stimulates blood flow to help decrease inflammation and swelling, and helps to alleviate pain and discomfort from plantar fasciitis, heel spurs and Achilles tendonitis. Premium Materials - Made from a breathable Nylon/Spandex blend, our moisture-wicking fabric keeps feet dry to provide all-day comfort. The wide, anti-slip band keeps our socks in place so the cuff won’t roll, move, or dig into your skin. Wear with Any Style of Shoe - The open toe design won’t restrict or compress your toes. Wear under socks in work boots, sneakers or sport skates, or without socks in high heels, thong sandals and other open toed shoes. Sizing - Fits most adult men and women with an ankle circumference between 8" and 10".