SuperfeetA(R) TRAILBLAZER Comfort insoles stabilize your feet on uneven ground and enhance comfort, even on the roughest terrain. Made to replace the sock liner in roomy to moderate-fitting athletic and outdoor footwear. Trim to fit your shoe size.PRODUCT FEATURES:A. DEEP HEEL CUPHelps prevent heel slip and toes from hitting the front of the bootB. MEDIUM TO HIGH ARCH SUPERFEET SHAPEMedium to high arch support in an orthotic shape made to stabilize the foot on rough terrain, 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(TM)With long-lasting odor controlE. H.I.T. (HEEL IMPACT TECHNOLOGY) PODDisperses impact for tough ascents and descentsF. EVOLYTEA(R) CARBON FIBER STABILIZER CAPProprietary carbon fiber and polymer blend provides responsive, weight-defying support and stability for the trailG. AEROSPRING(TM) ASCENT DUAL COMFORT FOAMTwo layers of heel-to-toe cushioning help reduce fatigue and provide reliable stability for the rigors of a good hike