The Nike Court Zoom Cage 3 is made for the player seeking strength & speed on the hard court. The shoe's unique cage design provides maximum durability & cushioning, & 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 modified herringbone outsole delivers excellent traction & durability. Ideal for hard court surfaces. Complete Comfort Nike Zoom Air unit in the heel delivers responsive, lightweight cushioning.