Superfeet RUN Comfort insoles help runners reduce foot fatigue while gaining efficiency. Responsive EVOLyte® carbon fiber cap and two layers of AeroSpring Rebound foam combine to deliver exceptional comfort and smooth and efficient energy transfer through your gait from foot strike to toe off. Made to replace the removable sockliner in roomy to moderate-fitting running and walking shoes. Trim to fit your shoe size.A. DEEP HEEL CUPPositions and cradles the heel to optimize natural shock absorption and minimize fatigueB. MEDIUM TO HIGH ARCH SUPERFEET SHAPEMedium to high arch orthotic support helps stabilize the foot while running, reducing stress on feet, ankles, knees and backC. DURABLE CONSTRUCTIONSuperfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes firstD. MOISTUREWICK™With long-lasting odor controlE. H.I.T. (HEEL IMPACT TECHNOLOGY) PODDisperses impact for an easier rideF. EVOLYTE® CARBON FIBER STABILIZER CAPProprietary carbon fiber and polymer blend responds to compression, springing back to its original shape for responsive, weight-defying supportG. AEROSPRING™ REBOUND DUAL COMFORT FOAMTwo layers of heel-to-toe cushioning offers ultimate comfort in every step