McKesson Anti-embolism Stocking Knee High Small / Long White Inspection Toe (1229443_CS) 12/CSWear these stockings to help prevent formation of deep vein thrombosis and to promote increased blood flow velocity in the legs by compression of the deep venous system. Color coded so it's easy to select size. Small long size fits calves 16 inches and taller that are up to 12 inches in circumference. Nylon spandex stocking includes an opening so you can see toes without removing stocking. Compression is 20 to 30 mmHg. Stockings are not recommended