The design of the PneumaticWalker incorporates a unique combination of support, protection, and compression. The durable semi-rigid shell helps support the limb and provides full-shell protection. The shell's rocker sole helps reduce plantar pressures. Lining the shell are four aircells for pneumatic support and increased comfort. The aircells can be custom inflated using the hand bulb (included) for a "total contact" fit. Aircast pioneered the functional management of lower leg fractures with the development of the first prefabricated walking brace the PneumaticWalker.