One United Ortho short air cam walking boot. Provides maximum stability and support following injury or post- op procedures.used for acute ankle injuries/ sprains,soft tissue injuries,stable lower leg/ foot and ankle fractures. Has plastic moulded uprights that are steel reinforced for increased stability,has rocker sole and shock absorbing insole which helps promote natural gait. S/M fit,fits men shoe size 4.5-6.5. And women size 6-8. Wide footbed to accommodate bandages.Has medial/ lateral air bladder that helps to provide support.Hardly used.