Pressure Rating: 30－40mmHg<br />Size:1 inch=2.54 cm Approx<br />S: Ankle 17-21 cm Calf 28-34 cm  <br />M: Ankle 21-24 cm Calf 29-38 cm  <br />L: Ankle 24-27 cm Calf 32-41 cm<br />XL: Ankle 27-30 cm Calf 34-44 cm  <br />Material: 80% spandex 20% nylon<br /