Nike Air Zoom Vapor IVThe Nike Air Zoom Vapor IV for men is the ultimate tennis shoe for the faster than lightning player. The Zoom Vapor 4 features a Counter Speed Fit upper made of lightweight synthetic material for fast movement in all directions, a Momentum Control System in the midsole for enhanced stability, regionalized wear zones reinforced with XDR rubber compound, and a full-length herringbone pattern. Also featured in the Air Zoom Vaor is the "Heat Block" system which helps reduce the amount of heat reaching your feet from the court surface.