Nike Air Zoom Zero Men's Tennis Shoes White/Black/Volt : The NikeCourt Air Zoom Zero is the first NikeCourt shoe to feature a full-length Zoom Air unit. This midsole technology lessens the pressure upon impact while providing more responsiveness and powerful cushioning for the court. The outsole includes a hollow center to reduce shoe weight and expose the Zoom Air unit. This ultra-comfortable NikeCourt Air Zoom Zero is ideal for aggressive players playing on hard court surfaces. Shoe Technology Upper: A single-piece upper backed with a snug sleeve ensures a light, glove-like fit. Midsole: A soft midsole houses NikeCourt's first full-length Zoom Air unit, which gives you responsive cushioning from heel to forefoot. Outsole: Rubber outsole is cored out in the middle to reduce the weight of the shoe. Segments of the rubber engage independently as your foot makes contact with the court to help promote a smooth heel-to-toe transition.