It has an in-built, pneumatic air compression system to fill the space between the boot and the leg. Air provides very comfortable, superior Immobilization with no pressure points. The boot offers ankle de-loading, Immobilization, and support to the fractured ankle/lower leg. It can substitute for a cast or be used in case of early cast removal. It helps in the early ambulation of the patient with ankle/lower leg fractures. With a wider rocker bottom, these boots promote a natural gait, reduced plantar pressure, and enhanced stability and comfort to the lower leg.