Heelbo® Heel and Elbow Protectors are made with a 6" diameter, cup-shaped, medium density, 3/8"-thick polyurethane pad with a tricot lining on the skin side. This pad is held in place by a circumferential, stretchable, soft acrylic terry loop material inside with a flat knit on the outside. The foam pad inside of the Heelbo® Heel and Elbow Protector is bar-tacked to the material at two points to prevent slippage, yet allows the person to move the joint without a shearing effect on the skin. These protectors are breathable, easy to slip on and off, machine washable, and retain their shape after repeated use. Available in XX-Large, X-Large, Large, Medium and Small sizes, protectors feature a color-coded system that allows you to determine the size quickly.