Sof Sole Airr Insoles Insoles : Medium Arch. The Sof SoleA(R) Airr(TM) is the first insole to combine an air cushioning system with moisture control technology. Simply put, this is one of the best performance insoles available. CoolMaxA(R) fabric wicks moisture away keeping your feet drier and more comfortable. Encapsulated air chamber cushioning in the heel and arch helps reduce foot pain and fatigue. Polymer gel forefoot cushioning provides increased comfort and forefoot propulsion. Manufacturer's Warranty: All Sof Sole insoles are built on a 30-day money-back comfort guarantee. If the customer isn't 100% satisfied with their Sof Sole insoles, they can return them to Sof sole for a full refund. No questions asked!