The NikeCourt Zoom Cage 3 is made for the player seeking strength and speed on the hard court. The shoe's unique cage design provides maximum durability and cushioning, and is also lighter than ever. Maximum Durability Made with a lightweight CPU cage built up in high-wear zones specific to tennis.""Zoned""cage adds stability without adding weight. Exceptional Traction The zoned outsole delivers excellent traction and durability. Ideal for hard court surfaces. Complete Comfort Nike Zoom Air unit in the heel delivers responsive, lightweight cushioning.