On Shoes, Reviewed by a Podiatrist
On's CloudTec outsole - the hollow pods under the foot - is the brand's defining feature and the one that divides opinion most sharply. The pods compress individually, which gives a distinctive underfoot feel that people tend to either prefer immediately or dislike immediately.
2 shoes published · Updated 8 Sep 2026
For a clinical audience the relevant question is what that structure does under a foot that is already painful. The pods are firmer and more segmented than a continuous slab of foam, so the brand generally suits people who want ground feel and a responsive ride more than those looking for maximum shock absorption at the heel.
Geometry across the road range is conventional - moderate drops and moderate stack heights - and the fit runs closer to narrow than to generous, with a limited width range compared with New Balance or ASICS. That is the first thing to check if you have a wide forefoot.
Every On model on file is below, with its published specification and, where independent measurement exists, the measured figures quoted separately. Each page states its evidence tier and names who should skip the shoe.
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All reviews: On
On Cloudmonster 3
Spec AnalysisMax-cushion rocker with a plate and hollow Clouds, 6 mm drop, $190 — not yet tested.
On Cloudrunner 2
Spec AnalysisSpec analysis only. Stability-leaning daily trainer, 10 mm drop per retail listing; not yet worn or measured.
What each tier is allowed to claim
The tier on a page governs what we are willing to say about the shoe. We would rather publish a smaller number than imply we measured something we did not.
Measured, then worn
Weighed and measured on the bench, then worn for recorded miles on recorded surfaces. Scored on all nine criteria. The only tier eligible for the seal.
Measured, not yet worn
Physically weighed, measured and stress-tested for stability, but not worn far enough to judge comfort over distance or durability. Carries measurements and an Orthotic Volume Rating — no overall score.
Not in our hands
A podiatrist's reading of the manufacturer's published specification, plus what the clinical literature says about that construction. No score and no seal, on purpose.
No brand has ever paid for a score
No sponsorship, no gifted-shoe quid pro quo, no paid placement. Where we earn a commission, the link says so and the score does not change.