Pigskin leather upper Double stretch gore for easy on and off Breathable mesh lining Kinetic Fit BASE removable contoured insole for flexible supportLightweight EVA foam midsole for stability and comfort Merrell sticky rubber outsole tunes each outsole with durable traction that grips when and where you need it Merrell is focused on merging performance, styling, and comfort to empower all people to confidently explore the outdoors Merrell Air Cushion in the heel absorbs shock and adds stability