Specially designed to treat plantar fasciitis, Achilles tendonitis, and heel pain. Using 2 interconnected aircells located under the arch and back of the heel, the AirHeel applies pulsating compression with every step to help reduce swelling and discomfort and enhance circulation. Made of lightweight neoprene fabric, it is simple to apply–just slip it on like a sock and adjust the fit with 1 strap.