PROCARE MAXTRAX AIR WALKER - Air Walker, Pediatric/ X-Small, Shoe Size: Female Up to 4, Male NA, Jr. Up to 5 | Quantity - 1x EADesigned to increase stability and help decrease pain and edema following trauma or post operative procedures. Adjustable medial lateral air cell system inflates both sides equally to accommodate changes in edema during rehab and maximize patient compliance. Cushioned inner outer sole with low profile rocker bottom provides increased stability and comfort. Soft nylon foam liner is constructed to ensure no seams are in critical postsurgical areas.