Simple, one-piece innersleeve construction provides a dynamic-fitting upper. A perforated synthetic frame and a grilly lacing system lock the foot to the midsole. Phylon forefoot delivers light performance and a responsive ride. Original Nike Shox four-column cushioning unit in the heel offers excellent cushioning. Full-length BRS 1000 carbon rubber and tacky Waffle Fill outsole with modified circular Waffle pattern offers enhanced deflection through designed geometric pods. 311200161