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. YOUR PURCHASE MAKES A DIFFERENCEEvery year, Superfeet donates 1% of sales and 1,000+ volunteer hours to organizations working to shape a healthy future. PRODUCT FEATURES A. DEEP HEEL CUP Positions and cradles the heel to optimize natural shock absorption and minimize fatigue B. MEDIUM TO HIGH ARCH SUPERFEET SHAPE Medium to high arch orthotic support helps stabilize the foot while running, reducing stress on feet, ankles, knees and back C. DURABLE CONSTRUCTION Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first D. MOISTUREWICK™ With long-lasting odor control E. H.I.T. (HEEL IMPACT TECHNOLOGY) POD Disperses impact for an easier ride F. EVOLYTE® CARBON FIBER STABILIZER CAP Proprietary carbon fiber and polymer blend responds to compression, springing back to its original shape for responsive, weight-defying support G. AEROSPRING™ REBOUND DUAL COMFORT FOAM Two layers of heel-to-toe cushioning offers ultimate comfort in every step