ASICS GEL-CHALLENGER 14 The Asics GEL-CHALLENGER™ 14 men's tennis shoe is a steady partner for any tennis player who wants to dominate. The upper is designed so that your foot locks into the shoe's platform for optimal stability. This creates a sense of empowerment when you are serving or back-pedalling, to run down deep lobs. DYNAWING™ technology on the sides improves stability during lateral movements. With this support, you don’t have to be afraid to give it your all, and hit the ball with all that you have. The sole has a separate heel construction that makes each step more stable even when you suddenly stop or change directions. ASICS GEL-CHALLENGER 14