Knee High at 15-20mmHg with reinforced heel and toe, comfortable fit * Designed to increase blood circulation and prevent legs swelling. Ideal for travel and daily wear * Available in Black, Navy or Brown Color. Wear as formal or casual occation. * Material Content: 25% Spandex, 75% Nylon * Sizing Guide: Please order by American shoe size: Mdeium(8 and under), Large(8 1/2- 10 1/2), XLarge( 11 and above)