Asics Gel-Challenger 14 Clay Men's Tennis Shoe provides the stability you need when covering the baseline, so you can keep your mind focused on game control. The shoe's upper ensures support, keeping your feet securely in place on the shoe's platform. It creates a reinforced feeling during volleys or when moving back to chase a deep lob. The DYNAWING technology on the sides enhances stability during lateral movements, providing excellent support to move quickly towards the ball for a hit. Additionally, the sole features a block heel structure for increased stability during abrupt landings. Regular Fit. Synthetic material.