The Standard walking boot offers a moderate level of support and Aircast’s quality, effectiveness and comfort in an economical model. The main indications for the Standard are: Stable fracture of foot/ankle/lower legSevere ankle sprainPost-operative immobilization The Standard has a durable, semi-rigid shell that supports the limb while providing protection. Housed within the shell are 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. Size Chart: Size Men Shoe Size Women Shoe Size Medium 7-10 8-11 Features & Benefits Customizable, independent aircells (NO separate hand bulb). Integrated inflation system puts the user in control for an individualized fitNon-marking, skid resistant rubber tread. For greater traction and longer wear.Removal of heel pain. SoftStrike technology absorbs and dissipates the energy during heel strike,Low profile rocker soleCustom and comfortable fit. Trimmable and heat moldable semi-rigid shell. Sleek, open-frame design provides ventilation and patient protection and compliance. Shell contours around the malleoli, for sustained comfort. AirSelect boots have improved width around the ankle area as well as uniformed sizing throughout the various sizes of the boot (XS-XL)Ease of application. Three-strap system evenly disperses pressure. Integrated inflation system is intuitive and permits quick and easy customization of each aircell Material Components Shell: POLYPROPYLENE Front Panel: High Density Polyethylene Straps: NYLON Inflation Pumps: Thermoplastic Polyurethane Liner: NYLON/POLYURETHANE/POLYESTER (Outer/Foam/Inner mesh) Binding: POLYESTER Outer Sole/Insole: EVA/RUBBER Selector dial: NYLON FREE! ( TAKE IT IF YOU REALLY NEED IT)