An air cast is a type of orthopedic device designed to support and protect injured limbs, particularly the ankle or foot. It is typically made of a lightweight, inflatable material that can be adjusted for comfort and compression. The air-filled chambers provide cushioning and help stabilize the injured area, allowing for mobility while promoting healing. Air casts are often used for conditions such as sprains, fractures, or post-surgical recovery. They are easy to put on and take off, making them a convenient option for patients. Proper use of an air cast can aid in recovery and reduce the risk of further injury.