Allcare Ortho Standard Moon Boot Cam-Walker 17" 43cm - X-LargeSizing Chart: According To US Shoe Size New contoured strut design allows the walker frame to conform to your patients anatomy ensuring a better fit. Unique shock absorbing sole reduces impact from the heel strike to improve comfort during ambulation. Rocker bottom is specially engineered to be low & wide to help promote a natural gait & increase stability. Functions: For the treatment of stable fractures & ankle sprains Indications: Ankle Sprains