XcelTrax® Air Ankle Air Walker Boot Pneumatic Adult Medium Short (783553_EA) 1/EADesigned for ideal support and comfort following trauma or post operative procedure The lightweight design and pre shaped ergonomic frame help to modify the level of pressure on the injury at both the malleoli and lower leg. The soft nylon foam liner has an integrated pump design making the pneumatic liner simple to inflate and adjust. Medium size fits those who wear men's shoes, size 7 10 or women's shoes, size 8 11.