fit frame system protects, supports, and locks down your feet. ; Adaptive traction Nike Shox heel technology adjust to whatever you run on. ; Forefoot Zoom Air unit for responsive cushioning. ; Phylon midsole forefoot pods for added cushioning and comfort. ; Waffle fill tread on a carbon rubber outsole for ultimate traction and durability. ; 13.00 oz. ; Product measurements were taken using size 9. Please note that measurements may vary by size.  (less)