The Over-the-Calf Compression Silver Socks will provide gentle pressure and can help alleviate the stress of being on your feet all day. These socks have a leg compression of 12-15mm. Hg which is just enough pressure to promote blood to flow from the feet to the legs without constricting. Silver is added in the production process to kill odor-causing issues and is clean to promote better foot health and hygiene. Leg compression: 12-15mm. Hg. Silver kills odor-causing issues and clean. Recessed toe seam for smoother feel. Polypropylene/nylon/silver/spandex. Machine wash. Made in Usa Sizes: L (9-11), Xl (12-16), 2XL (17-21)