The combination of the latest technologies in designing the upper midsole as well as the outsole guarantee a comfortable ride. Upper: Made of high elastic yarn and woven into one piece. A sock-like upper provides a comfortable wearing experience. Midsole: Made of intelligent material P4U and compounding foaming. During low-speed motion state, this material appears to be soft. As the speed increases, the midsoles become highly elastic to provide a suitable response, rebound, and support. Outsole: Anti-twist Piece. The intertwined embossment and hollow-out reduce the weight of the outsole which gives a light-footed feeling for the wearer.