The Sof Sole Airr Insole features an encapsulated air chamber in the heel and arch, as well as Polymer Gel in the forefoot for customers looking for the ultimate in shock absorption. Equipped with a COOLMAX moisture wicking top-cover, the Airr creates an ideal environment for your foot, and its neutral contour design is suitable for any user or type of footwear. Fit & Design: COOLMAX fabric top cover wicks away moisture SKYDEX air capsules in heel and arch convert impact into kinetic energy New slimmer design to fit into all athletic shoes Polyurethane footbed for full-foot comfort Gel forefoot enhances shock absorption Additional Details: