"Size of our copper socks are Large/X-Large but a lot of our customers mentioned that they wear medium size and this item fits perfect. All measurements are hand measurements, so there may be a little error, please understand. Copper infused fibers; Machine washable. Relieves symptoms of varicose veins and fluid retention. Compression technology applies graduated pressure to boost circulation and help reduce aches and swelling. Elastic fiber, tight, and not easily to slip off, thin enough to fit your shoes. Material: 90% nylon, 10% spandex."

IGIA High Copper Threaded Compression Socks-Relieves pain and aches on feet (12 Pairs White Copper, Large/X-large)