Formfit® Walker Air Air Walker Boot Pneumatic Adult Large Tall (624384_EA) 1/EAPatented pneumatic system increases stability while decreasing pain and swelling. Adjust the air level with ease to achieve a desired compression and fit Low profile rocker bottom helps promote a natural, stable gait. Comfortable foam liner with easy hook and loop fastening straps allows for quick and easy fitting adjustments. Fits on either left or right foot Large size is for those who wear women's shoes, size 11 13, or men's shoe, size 10 12.