Our Anti-Embolism Stockings are designed for easy application and coolness while wearing. The stockings are made out of 71 percent Nylon and 29 percent Spandex graduated compression and come in Knee Height and Thigh Length. They are a open-toe style for extra comfort. Carolon Anti-Embolism stocking may be cleaned safely by machine (Washing Machine)and are safe to be died. Please avoid excessive heat or bleaches and reasonable care in handling and laundering will give excellent stocking life. The Carolon company recommends removal of the stocking once every 24 hours or more often if desired). This facilitates complete access to lower limbs. Completely Latex Free for people that may be allergic.