The GEL-Resolution® X tennis shoe creates advanced stability and cushioning for players who like to control the game from the baseline. Dynalacing™ technology has been strategically designed to hold when extra support is needed. This allows you to experience a locked-in feel when you´re making quick transitions. There´s also a two-piece midsole design that helps improve stability when your foot lands on the court. Dynawall™ technology in the midsole now extends into the heel for added stability during lateral movements. It´s a functional feature that´s effective when you´re running covering both sides of the baseline. Lastly, the higher medial collar helps prevent ankle twisting when making abrupt cuts back and forth.Features:- Pguard® Technology Helps Increase Durability In The Upper´s Forefoot Inside Area- Dynawall™ technology Helps improve stability- Dynalacing™ technology Helps create a stable fit during dynamic movements- Aharplus™ outsole rubber Improves durability- Forefoot GEL® technology Improves impact absorption and creates a softer feeling at footstrike- Two-piece midsole design Helps produce more stable landings- The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology