Note: It is recommended that those who are over 45 years old (including 45 years old) should choose one larger size on the original suitable size. specification: Item Type: Compression Stockings_x000D_Material: Polyurethane_x000D_SizeAnkle CircumferenceCalf CircumferenceThigh Circumference_x000D_S16.5-21cm / 6.5-8.3in26-37cm / 10.2-14.6in44-58cm / 17.3-22.8in_x000D_M18-22cm / 7.1-8.7in19-38cm / 7.5-15in47-62cm / 18.5-24.4in_x000D_L23-25cm / 9.1-9.8in32-41cm / 12.6-16.1in51-64cm / 20.1-25.2in_x000D_XL26-28cm / 10.2-11in35-44cm / 13.8-17.3in55-68cm / 21.7-26.8in Features: 1To prevent and relieve mild to moderate varicose veins, relieve leg fatigue, sores, and slight swelling of feet, ankles, and legs. 2To contract muscles, promote blood circulation and prevent postoperative recurrence of varicose veins symptoms. 3Anti?slip ankle part design, wonderful wearing experience and ensure maximum comfort after wearing. 4Made of high quality polyurethane fabric, super soft and comfortable material, high flexibility and easy wearing. 5There are 4 different sizes of compression stockings available, you can choose according to your demands. PackageList: 2 xCompression Stockings