NEXTEP Contour 2 Walker, Large, Shoe Size: Male 10-13, Female 11-14. Brushed NYLON/foam liner, low profile E.V.A. non-skid sole. Lightweight, durable, one-piece wrap-around posterior shell, provides maximum immobilization and support. Unique design accommodates larger calf sizes. UOM: EA. DJ ORTHOPEDICS, LLC.