Open Toed EMS Anti Embolism Stockings 12 pairs of knee length, size small, regular leg length compression stockings are recommended for those with a calf circumference of 10 inches to 3 inches and a leg length of 14 inches to 16 inches. The compression stocking pressure is 18 mmhg at the ankle and gradually reduces to 16 mmhg. Designed by leading vascular specialists,Medline EMS or TED stockings provide a contoured fit with gradient pressure designed to keep blood and lymphatic fluid flowing in those who are bedridden or do little walking. Stretch anti embolism stockings concentrate pressure at the ankle with gradient pressure that progressively decreases throughout the leg. Construction is 95 per cent nylon and 15 per cent spandex. Knee length, box of 12 pairs, by Medline Industries. This item ships from a separate warehouse and may require extra time for delivery.