While our "Heel Cradle System" creates unparalleled shock absorption in the heel area, our exclusive "Shockicel" shock absorbing foam insert in the ball area removes stress from the metatarsal joints. Our triple-density removable footbed also has higher density cushioning in the heel and ball area to amplify the shock absorption effect created by "Heel Cradle System" and "Shockicel" inserts. An extra-wide shank prevents your foot from over-pronation, completing a perfect combination of components, providing you with ultimate comfort.