For runners who incorporate speed runs of 4 minutes or less per kilometer into their daily running routine. This includes both runners who incorporate speed runs as part of their competitive training and those who are not aiming for competitive records. This shoe helps you run at high speeds without scrimping on comfort. The MIZUNO ENERZY LITE/FOAM material used throughout the midsole supports high-velocity running. The MIZUNO WAVE enhances stability without losing comfort. Plus, the G3 outsole is lightweight and offers excellent grip.