The Nike Shox R4 shoes let the responsive cushioning take you for a great ride. It has been the most successful shoes in the Nike Shox lineup, using a transparent air shox, between the Shox and uppers reinforced with the frelan. The overall design using the latest idea, wear stylish.Synthetic and breathable upper for support, Phylon midsole with flexible Air-Sole unit, BRS1000 carbon rubber outsole for durability.