The GEL-RESOLUTION™ X tennis shoe creates advanced comfort 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 comfort and 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 adds extra support when making abrupt cuts back and forth.•PGUARD® technologyHelps increase durability in the upper’s forefoot inside area•DYNAWALL™ technologyHelps improve stability•DYNALACING™ technologyHelps create a stable fit during dynamic movements•AHARPLUS™ outsole rubberImproves durability•Forefoot GEL® technologyImproves impact absorption and creates a softer feeling at footstrike•Two-piece midsole designHelps 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