Heel Cup - structured heel cup helps stabilize and naturally absorbs impactBiomechanical Shape - the contoured shape helps stabilise and support the footOdour Control - top layer delivers long lasting odor controlFlexible Heel Cradle - the ¶ðflexible horseshoe-shaped heel cradle provides structure and stability to the foam layerRounded Edge - the rounded edge on the full-length foam layer improves the fit in footwearAeroSpring Foam - durable viscoelastic closed-cell foam absorbs impact to deliver long-lasting comfortThickness: 4mmRecommended activity -walking / hiking