The biggest change to the HOKA Mach 4 is the refined upper shape and makeup.
In previous models, the mesh upper was intended to lock the foot into place with specialized detailing around the midfoot and added panels for breathability.
Now, the Mach 4 sports a sleek, redesigned mesh upper knit from heat-pressed TPU yarn for added durability and structure to last through everyday mileage. This new upper material helps maintain the lightweight feel of the shoe.
The updated upper also works with the reconstructed heel collar to create a super-secure feel that our reviewers loved.
“My heel feels locked in place, and there's a nice bucket-seat-like feel in the footbed—I land right in the middle of the shoe every time,” says one reviewer.
The pull tab on the heel flares away from the Achilles to prevent uncomfortable rubbing on the run. This construction is paralleled by the flared heel counter in the outsole to create a speedy vibe.
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