The GEL-RESOLUTION 9 tennis shoe promotes enhanced stability and cushioning; for players who like to control the game from the bottom line. ​​DYNAWALL technology in the midsole now extends to the heel to offer greater stability in lateral movements, which is important when running to cover both sides of the bottom line. DYNAWRAP technology in the reinforcement eyelet has been strategically redesigned to apply pressure when extra support is required. This way, you can feel more stable when making quick transitions. Finally, the full-length sole and separate heel help to ensure a more stable footing for a fast recovery between strokes.