Mizuno Wave Inspire 21Mizuno's latest iteration of their popular supportive road running shoe, the Wave Inspire 21, is softer, more stable, and smoother than ever. With key upgrades, this new version delivers enhanced comfort and a light, effortless transition with every step. The new Enerzy NXT midsole foam provides exceptional rebound, while the improved Wave technology provides a smooth ride and support to help prevent any over pronation, maintaining your natural gait.