Knee High at 15-20mmHg with reinforced heel and toe, comfortable fit. Cotton Feel. * Designed to increase circulation to lower extremities (e.g. feet, ankles, calves) * Comfortable and durable thread knitting to prevent swollen legs and promote blood flow. Additional thickness added to the heel area for extra comfort and reduce the risk of blister. * Material Content: 65% Cotton, 25% Spandex, 10% Nylon * Sizing Guide: Please order by American shoe size: Mdeium(6.5 and under), Large(7- 8 1/2), XLarge( 9- 10 1/2), XXLarge( 11 and above)