The SOLUTION SPEED™ FF 4 shoe is a fusion of speed and quickness. It's engineered to elevate your performance with advanced features focused on supporting fast and dynamic motions.The updated, softer FLYTEFOAM® midsole helps deliver more cushioning, a high-energy return while remaining lightweight. A meticulously engineered SPEEDTRUSS™ technology harnesses your connection with the court so you can accelerate quickly.Durability is increased thanks to a PU loop at the top of the upper's medial side. It's also equipped with eyelet loops on the medial side to help prevent the shoelaces from breaking during abrupt movements.