MERRELL KINETIC FIT PREMIUM COMFORT INSOLES are the most advanced insoles for support and comfort for walking, trail running and hiking. It features a 100% recycled material top-layer with breathable, moisture wicking comfort with Cleansport NXT️ natural odor control built-in. It also features a slow rebound memory foam comfort layer, a deep heel cup for advanced heel stability, semi-rigid sustainable cork support system with anatomic arch support and a heel strike pad for extra comfort.