FootSmart Therapeutic Moderate Support and Open Heel Knee High Compression Hose Non-sheer hosiery provides medical-grade graduated compression to promote better circulation in your lower legs; Graduated Support Level: Moderate (15-20 mm / Hg) Microfiber yarn feels soft and makes knee highs easy on / off; Two-way stretch provides extra support; Honeycomb design knitted top won't restrict circulation Open toe and heel design helps keep pressure off the toe, heel and instep for a comfortable fit and a discreet look. Helps relieve: Circulation, DVT, Economy Class Syndrome, Edema, Heaviness in Legs, Leg Pain, Leg Veins, Spider Veins, Swollen Ankles, Swollen Feet and Legs, Tired, Aching Feet, Varicose Veins, Venous Insufficiency Made in USA; 85% nylon, 15% spandex; For first-time wearers, we recommend Light to Moderate Support products initially to become accustomed to the tighter feel of graduated support