This shoe is perfect for runners who like to incorporate fast sprints into their runs, whether they’re training for races or setting new records. The shoe is packed with features that support high-speed running with the right gait, including SMOOTH SPEED ASSIST. MIZUNO ENERZY LITE+ material provides enhanced softness at a lighter weight for the upper midsole, while MIZUNO ENERZY FOAM in the lower midsole provides cushioning and energy return. 1) SMOOTH SPEED ASSIST Supports runners in what Mizuno considers the ideal stride from start to finish during races. 2) MIZUNO ENERZY LITE+ Compared to MIZUNO ENERZY LITE, this material, which aims for even more softness and lighter weight, is used in the upper midsole to support high-speed running. 3) MIZUNO ENERZY FOAM MIZUNO ENERZY, which provides great cushioning and energy return, is placed in the lower midsole to support more stable high-speed running. 4) MIZUNO WAVE Enhances stability during high-speed running without compromising on softness. The plate extended to the forefoot also supports the effects of SMOOTH SPEED ASSIST.