Mizuno Wave Sky 9

Mizuno Wave Sky 9 review: what runners say

Fit

Narrow in the toe box and low volume throughout; multiple sources recommend sizing up half a size or going straight to the 2E width if the foot is wide or medium-wide.

Feel

Deep cushioning with dual Enerzy NXT / Enerzy midsole: stable, balanced ride, but firmer than the max-cushion category average; limited energy return.

Durability

Midsole and upper hold up well past 150 km; the X10 carbon-rubber outsole is durable in high-stress zones but shows early wear at the forefoot. Estimate: 700–800 km for heavier runners, 1,000+ km for lighter runners.

Best for

Daily trainer for easy paces, active recovery, and long distances. Suited for heavier runners or those seeking high joint protection; not appropriate for quality sessions or sustained faster paces.

Weak points

Short toe box and insufficient internal volume: a structural issue flagged by multiple independent reviewers. Price perceived as high relative to competitors offering a more dynamic ride.

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