Zip Sox Compression Socks Zipper Leg Support Knee Closed Toe Shaper Stockings UK Description: 1. Improve venous blood flow. Promote blood circulation, prevent varicose veins. 2. Reduce swelling and fatigue caused by sitting or standing for a long time. 3. Prevents lactic acid production, minimize muscle vibration and micro-tearing, prevent cramps and injuries. 4. Keeps your feet dry and minimizes blisters. Specification: Material: Polyester Color: As shown Size: As shown Package List: 1Pair x Socks Note: Please allow slightly errors due to manual measurement and different monitors.