ASICS Solution Speed FF 2 is a good alternative for athletes searching for faster accelerations to stay ahead of the ball. The Solution Speed FF 2 tennis shoe is the fastest model in the ASICS tennis line and is designed to assist players expand their territory on the court. The upper of the Solution Speed FF 2 model is made of PU (polyurethane), which provides better support, flexibility, and fit. This application, which incorporates Dynawrap technology into the eyestay, helps give increased stability in the forefoot during side-to-side motions. This shoe is ideal for athletes who want to get to the ball quickly and have more time to plan their shot.