Therafirm® Sheer Ease Women's Knee High 30-40 mmHgThe Therafirm Sheer Ease Women's 30 40 mmHg Closed Toe Knee High Compression Stockings are designed to help improve circulation and relieve minor ankle and leg swelling and leg fatigue. FEATURES Delivers a controlled amount of pressure greatest at the ankle and gradually decreases towards the top of the stocking to promote better blood flow. Designed to help prevent mild varicose veins, leg discomfort, mild to moderate swelling, mild edema, and DVT.