100mm | 4 inch leather-wrapped heel.Flex-molded leather motion outsole, engineered to promote natural movement.Laser-cut perforations deliver flexibility, breathability, and moisture control.Responsive energy foam and achilles padding eliminate break-in time and heightens comfort.Extended leather outsole is designed to cradle the foot and stabilize the arch.Achilles padding and a flex-molded leather outsole creates broken-in comfort and flexibility from the very first step.Ankle notch detailing not only provides visual interest but also prevents rubbing and chafing.Grand.OS technology.