Air Select walkers have a durable, semi-rigid shell that supports the limb while providing protection. Two adjustable distal aircells that provide compression and support the malleoli. SoftStrike technology absorbs and dissipates shock, while the light weight and lab-tested rocker sole combine to encourage a natural gait and a continuation of everyday activities AirSelect Standard The Standard walking boot offers a moderate level of support & Aircast’s quality, effectiveness & comfort in an economical model. The main indications for the Standard are: Stable fracture of foot/ankle/lower leg, Severe ankle sprain. Post-operative immobilization