For runners with average builds. For everyone from beginner runners to people training for marathons who want a shoe for jogging. This shoe is perfect for jogging for everyone from beginner runners to dedicated runners training for marathons. The MIZUNO ENERZY midsole is 2 mm thicker than the previous model, which boosts the cushioning and energy return, gives a softer feel, and provides a spring-like propulsion. Enjoy the signature running comfort of WAVE RIDER with enhanced smoothness and stability.