The Wave Horizon is the softest stability shoe Mizuno makes, and the 9 stacks 41 mm of ENERZY NXT under the heel over a foam Wave that carries the support instead of a post.
It suits you if you overpronate, spend most of your week running slowly, and want the stability to arrive as shape underfoot rather than as a firm wedge under the arch — easy hours and long runs, where the job is to stay comfortable to the end rather than to help you race.
It is not light and it is not quick. You feel every one of its 320 g the moment you try a workout in it, and the ride is soft and floaty rather than snappy.