Strength level: Mizuno WaveKnit S1 

Mizuno WaveKnit S1 mizuno

The outsole unit of the WaveKnit S1 is comprised of X10, a carbon rubber-based layer that protects the midsole from the abrasive nature of the asphalt. It has been touted as a highly durable compound that confidently staves off wear-and-tear while also doling out adherence over the ground.

Mizuno WaveKnit S1 outsole

Smooth and flexible ride

Deep flex grooves grace the forefoot section of the external pad of this daily trainer, as well as the transition rail of the lateral section. These trenches are designed to make the platform as flexible as possible, thus allowing the foot to move naturally through the gait cycle.

Mizuno WaveKnit S1 flex grooves

The decoupled heel isolates the impact shock of the foot-strike and smoothens the transitions through the gait cycle.

WaveKnit S1: Stable from lace-up down to the last stride

The midsole unit of the Mizuno WaveKnit S1 uses two layers of foam. The first one is the U4ic, a topsole that carries the foot and keeps it free from impact shock and movement deviation. It is flexible yet slightly firm, giving the foot a platform that isn’t wobbly or unwieldy.

Mizuno WaveKnit S1 cushion

The second foam that graces the midsole is the U4icX, a bottom layer that is responsible for receiving the brunt of the foot strike and the weight of the foot. This feature is fundamentally a softer version of the U4ic. A full-length implementation is applied to the WaveKnit S1, unlike some series like the Wave Rider and the Wave Inspire which implement a wedge version.

Mizuno WaveKnit S1 midsole

The Mizuno Wave is a thermoplastic piece that is sandwiched between the two primary cushioning technologies. This midfoot-to-heel accouterment is tasked with steadying the position of the foot, keeping it from buckling or accidentally shifting its stance.

Delivering a sock-like fit

The upper unit of the Mizuno WaveKnit S1 uses a knitted fabric, an element that exhibits a wrap that is similar to wearing a sock. The smooth configuration of the fibers prevents the skin from getting irritated.

Mizuno WaveKnit S1 sock-like

It can't get more breathable than this

Breathing pores that widen as the material stretches and follows the shape of the foot are tasked with accommodating the flow of air into the interior compartment.

Mizuno WaveKnit S1 mesh

Mizuno WaveKnit S1: Secures the foot in place

The sides of the façade have tightly woven portions to act as reinforcements and accents that boost the upright structure of the upper unit. They double as striped highlights that aim to make an impact on the visual aspect.

Mizuno WaveKnit S1 overlays

The Mizuno logo has been printed onto the sides of the silhouette as a determinant for brand recognition. These prints also double as overlays that help with the security of the foot.

Mizuno WaveKnit S1 padded tongue

The padded tongue and collar are made to cushion the upper portion of the foot, including the Achilles tendon, the ankles, and the instep. In-shoe wobbling and unintentional shoe removals are also incidences that are to be prevented by these parts of the façade.

Facts / Specs

Terrain: Road
Weight: Men 310g / Women 260g
Drop: 10mm
Arch support: Neutral
Forefoot height: 22mm
Heel height: 32mm

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Mizuno WaveKnit S1 video reviews

Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.