Achilles Tendon Walker Insoles fit into your existing cast walker. Tri-level insole has adjustable 5 cm mid-wedge. Peel-off layers allow for progressive control of ankle flexion. Top sole has heel-centering profile, multi-layered wedge insole, and NickelPlast base. Fit left or right. Sizing: Medium fits Women’s shoe up to 11, Men’s up to 10. Large fits Women’s 11+, Men’s 10+