The Gel-Challenger 14 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.​Dynawing 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.​The Outsole Also Features A Separated Heel Construction To Help You Experience Better Stability During Abrupt Landings.