56% nylon/28% spandex/10% cotton/6% polyester Imported Machine wash cold, tumble dry low. Pack of 1 Pair of knee high compression socks featuring elastic arch support,left/right toe design and reinforced toe and heel. Graduated compression socks (20-30mmHg) provide the ideal compression and boost your blood circulation to the maximum. They help reduce lactic acid build up and ensure fast muscle recovery. Great for relief of varicose veins, Calf Compression. Silver fiber is blended in the yarn to provide fantastic anti stink function and remove foot odor. The polyester we used has unique structure which wick moisture 4 times faster than cotton in the same condition. It makes the socks quick dry and anti sweat.