The ultimate analgesic for dog-tired, beat up feet, SorboAir superbly balances a lightweight, air-infused composition of Sorbothane with heavy-duty cushioning. Upon cushioning. The result is three soft layers of soft comfortable shock-absorbing cushioning for all day comfort. These high-performance insoles with maximum shock absorption and extra cushioning are ideal for court-sports such as basketball and tennis, as well as for running, walking, and post-workout relief. SorboAir gives athletes that "extra full-court" cushioning and protection.