9-12 mm Hg Lite Support. Ideal for anyone wanting great-looking and feeling legs, especially those who sit or stand for long periods of time. Prevents mild leg fatigue and discomfort and ankle and foot swelling by improving circulation in the legs. Helps prevent varicose veins and spider veins. Elegant in its sheerness, this support hose gives comfortable, ultra-light support while still remaining fashionable. Feels and looks silky smooth. Thigh High features a sheer sandal foot and lace top with silicone strips to keep the hose in place. Nylon/Spandex. Lightweight graduated compression support legwear helps prevent and relieve tired, aching legs; mild ankle and foot swelling; and mild spider and varicose veins.