Mizuno Wave Sky 9

Mizuno Wave Sky 9 review: what runners say

Fit

Narrow, low-volume fit: multiple sources flag the short toe box and narrow toebox as a recurring issue. Sizing up at least half a size recommended for medium- or wide-footed runners.

Feel

Deep, stable cushioning with a dual-density Enerzy NXT/Enerzy midsole. The ride is firmer than other max-cushion options in the category; limited energy return, transitions lack snap.

Durability

Midsole and upper hold up past 700–1,000 km depending on runner weight. The X10 carbon rubber outsole shows early wear at the forefoot within the first few miles.

Best for

Daily trainer for easy paces, recovery, and long distances. Suited for heavier runners seeking protection and stability; not appropriate for fast sessions or workouts.

Weak points

Narrow, low-volume toebox penalizes medium- and wide-footed runners. Price considered high relative to the energy return performance delivered.

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