The fact that ASICS Solution Speed FF is ASICS 'lightest tennis shoe does not mean that it has not been equipped with a number of technical functions for a better game. Midsole FlyteFoam technology not only provides failure and better response but also makes the shoe more durable, while a Twisstruss System absorbs shocks to the foot without restricting its movements. Add a removable insole and GEL cushioning under the entire foot for a softer landing, and you get a really comfortable and high-performance tennis shoe.