Nike Men's Air Vapor Advantage Tennis Shoe synthetic-and-mesh Rubber sole Shaft measures approximately 3" from arch Lightweight combination upper for a comfortable fit Phylon midsole with a heel Air-Sole unit for impact protection Durable XDR rubber compound outsole with midfoot shank for stability TPU footframe wraps from the lateral midfoot to the heel for stability during quick turns Rubber outsole with XDR compound on the heel and forefoot for traction and durability on hard court surfaces