Design: Knit upper completely knit upper combines a sleek design and a natural fit for all foot types U4icX Strobel lasting board ensures a comfortable underfoot feel In-Shoe Comfort: Full length midsole heel to toe cushioning for ultimate comfort EVA Midsole Durability & Traction: Mizuno C-Flex Outsole Mizuno's next innovation in outsole technology using a lightweight, rib construction stability and flexibility Symmetric stud arrangement for enhanced traction, while also providing increased comfort with reduced stud pressure