The GEL-CHALLENGER® 13 tennis shoe creates the stability you need when you're covering the baseline, so you can keep your mind focused on controlling the point.  The shoe's supportive upper keeps your feet locked-in on the shoe's platform. It creates a reinforced feel during volleys or when you're dropping back to track down deep lob shots. WINGWALL™ technology is placed in the sidewall to improve stability during side-to-side movements. This feature offers good support, so you can step into your shot and stroke the ball with more pace. 
Synthetic Leather Toe Box
Reinforced Mesh Midfoot With PU Film
P-Guard
Wingwall Trusstic System
Internal Heel Counter
Amplifoam Midsole
Forefoot Gel
Rearfoot Gel
AHAR+ Outsole
Non-Marking Rubber
Removable Moulded Ortholite Sockliner
Full Ground Contact Outsole
Hardcourt Outsole Design