[Features] You can expect to promote venous return due to the extension of the toes. The heel part has a smooth weave on both sides of the heel and the outside. The opening of the shoe is stretchable, making it easy to put on. [Specifications] Ankle circumference (inches): S (6.7 - 8.3 inches (17 - 21 cm); Sole Size: 10.2 - 10.8 inches (26 - 27.5 cm); Material: Polyester, Cotton, Nylon, PU (Polyurethane) Ankle Wear Pressure: Over 0.6 inches (15 mm); Check Window Lid Color: Light Blue Medical Device Registration Number: 34B3X1000000 x 10 x 10 x 10 x 30 x 30 mm g [Load Size: About ]