are made of a special light weight 2-way stretch knit of 71% polyester and 29% nylon and covered spandex which enables the stocking to adapt to variations of leg sizes better than standard knits. #553-01-Sm #553-02-Md #553-03-Lg #553-04-XL 12Pr/Bx Latex Free UNSPSC#42142802 NJCore