Wave Sky 8 vs Wave Sky 9

The Wave Sky 8 is Mizuno's plush, max-cushion daily trainer, and it plays that role with real conviction. This is a soft, protective road running shoe built for piling on easy miles in comfort, not for chasing splits. At 310g it is a hefty shoe, so you feel every gram if you try to pick up the pace, but that weight buys you a deep, forgiving platform that shrugs off long runs and keeps your legs fresher on recovery days. The 8mm drop sits in familiar daily-trainer territory and suits heel and midfoot strikers alike. In our view it is best thought of as a cruiser: a neutral shoe for runners who value cushioning and durability over pop and speed. If your priority is a soft, dependable trainer for long slow distance, it earns its place. Runners after something lighter and livelier, like the Hoka Bondi 9, should look elsewhere.

The Wave Sky 9 is Mizuno's plush, max-cushion daily trainer, a soft running shoe built to soak up easy miles and long runs rather than chase pace. With 44.3mm of stack under the heel and a moderate 6.2mm drop, it plants a deep, protective platform between your legs and the road, and that is exactly where it does its best work. At 295g it is a substantial shoe, so nobody will mistake it for a tempo tool. That heft is the trade-off for the comfort. If you want a neutral cushioned trainer to protect tired legs across a marathon build, or a plush recovery-day cruiser, it earns its place. If you already run in the Asics Gel Nimbus 28 or another pillowy daily trainer, the Wave Sky 9 sits squarely in that same comfort-first bracket, and we rate it as an honest, dependable option rather than a flashy one.