ASICS Gel-Challenger 14 Clay Tennis Shoes Creating the stability you need when covering the baseline, the Gel-Challenger 14 from ASICS keeps your mind focused on controlling the point. Supportive Upper The upper of the ASICS Gel-Challenger 14 Tennis Shoe is designed to provide unbeatable support. It features a PGUARD toe protector to protect the toe box and your feet from abrasion and ensures long-lasting performance. The supportive upper of the tennis shoes keeps your feet locked in on the shoe's platform for a stable ride and comfortable fit. This creates a reinforced feel during volleys or when dropping back to track down deep lob shots. DYNAWING technology has been placed in the sidewall to further help improve stability during side-to-side movements, offering good support and allowing you to step into your shot and stroke the ball with more pace. The traditional lacing system gives that locked-in feel for added confidence and secures the shoe to the foot for impr