Surrounds the lower limb in air. Designed to float the heel while sustaining the integrity of the foot, ankle, calf and Achilles area. The air-filled straps and foot pad offer pressure ulcer prevention, treatment and patient comfort. It can be used conveniently at home and on OR tables, stretchers, ICU beds, wheelchairs and general ward beds. Recommended for prevention and treatment of Stages I-IV Pressure Ulcers and Deep Tissue Injury. Not a walking boot. Ships pre-inflated.