For pronounced varicose veins and tired, aching legs. This product provides physician recommended gradient compression to improve blood flow and prevent swelling. Promotes relief from edema, even following sclerotherapy or vein surgery. Offers style and durability in a lightweight design, ideal for formal or semiformal occasions or with dress attire. Classic ribbed design with moisture transport system. All-day comfort knee band. Reinforced heel and toe with anti-odor formula. 20-30 mmHg. Directions: Size x-large: measurement b 11-1/2 -13 inch (29-33 cm), measurement c 13-3/8 – 19-5/8 inch (34-50 cm).