The Nike Air Max Courtballistec 1.3 tennis shoe features a synthetic upper with DragOn X provides exceptional lateral support and durability. Midfoot lace protection. Lunarlite technology in the forefoot offers a softer and more flexible ride. Max AirŪ unit in the heel for those five set matches. Midfoot shank gives support. Full-length XDR outsole in a modified tennis herringbone pattern adds extreme durability and traction on all surfaces. Wt. 17.6 oz.