Outsole: 100 percent rubber Midsole: X Cell Upper: a mix of textured and premium materials Elevated cage design provides enhanced lockdown Screen print details The All New X Cell Lightspeed Features The State Of The Art X Cell Technology Built For Support And Comfort. It Has An Overlay Cage Detail That Adds Durability And A Bold Visual. The Upper Features A Lace Up Construction For Optimal Fit. That Running Goal Has Never Been So Close.