Order by Ankle Circumference in inches- Small 5-7.5" Medium 7-9 Large 9-11 XL 11-13 2XL 12-14 * Non-binding comfortable top and bottom bands for a secure fit. Latex Free - Plantar Fasciitis Support Sleeve for daily use in Arch, Heel, and Plantar Fasciitis foot pain relief. * ideal for daily use in reducing arch and heel pain or symptoms of Plantar Fasciitis. The Sleeve is a thin, breathable design that is excellant for wear under socks and with shoes. * Comfortable Top and Bottom Bands holds sleeve in place * Ribbed Bands at Achilles Tendon and Arch offer added support for Achilles Tendon and arch to alleviate aches & pains *