Brand new, open packaging … The United Ortho Short Air Cam Walker Fracture Boot is a medium, black boot designed for stabilization of the leg. Made by United Ortho in the United States, this adjustable boot is suitable for both men and women and is a unit designed for medical and mobility purposes. It is specifically the United Ortho USA14115 Short Air Cam Walker model, providing support and comfort for those in need of a fracture boot.