The Sof Sole Airr Orthotic is a stabilizing sports insole designed for high-impact activities. The Airr Orthotic insole combines four special technologies to optimize comfort, shock absorption, and stability: polymer gel, nylon reinforcement in the arch area, and air capsules in the heel that absorb impacts and shocks. Sof Sole insoles are characterized by excellent manufacturing quality, outstanding moisture management, and the incredible IMPULS shock-absorbing material. No matter which insole you choose, you will always have a layer of "forest floor" beneath your feet. Sof Sole insoles are recommended by US doctors as a preventive measure to protect against foot and joint problems.