Nike Air Max Courtballistec 4.3 - Men'sThe Nike Air Max Courtballistec 4.3 tennis shoe features a combination upper of fused elements and durable rubber compounds in areas where most required to combat wear and tear. Lunarlon cushioning system in the forefoot offers a softer and more flexible ride. Max Airô unit in the heel provides comfort cushioning. Full-length XDR outsole with a mix of patternsadds improved durability and traction on all surfaces. Midfoot shank gives support. Insole is removable. Wt. 16.0 oz.