Specification Brand : The DJO, Incorporated ProductGroup : BISS Basic ProductTypeName : ORTHOPEDIC_BRACE SmallImage_Height : 66 SmallImage_URL : https://m.media-amazon.com/images/I/21jpEWKhYSL._SL75_.jpg SmallImage_Width : 75 Title : The MaxTrax Air Ankle walkers are designed to increase stability and help decrease pain and edema following trauma or post-operative procedures. Adjustable air chambers to accommodate changes in edema during rehab and maximize patient compliance.