Walker Boot XcelTrax Air Tall Large D-Ring / Hook and Loop Strap Closure Male 10-1/2 to 12-1/2 / Female 11-1/2 to 13-1/2 Left or Right Foot Designed 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 Age Group: adult.