Leverage fasteners attach directly to the polyurethane upper, which achieves even compression throughout the lower leg and foot. The sturdy, hard shell stabilizes the foot and ankle with a polyurethane sleeve that contours to and protects the lower leg and foot. The Walker has a low profile walker sole for greater comfort and less pressure on the knee. Two "L" pads fill in the Achilles Triangle and help force fluids out of the area to speed healing. Latex-free.