Upgrade your favourite shoes with the FLEXmax Insoles from Superfeet. Developed with a special flex that hugs and cradles your heels to help you and your footwear feel amazing. Built with a long-lasting 5mm Aerospring which delivers supreme comfort from heel to toe, while the flexible heel cradle provides structure and stability, which reduces stress on your feet, ankles and knees so you can keep on going. These insoles have been designed to fit very well in roomy athletic footwear. Can be trimmed to fit your shoe size. Here in the Emerald colourway.