On Cloudsurfer 1 vs Cloudsurfer 2
Updated August 5, 2026. Specs are men's US 9.
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THE SHORT ANSWER
Whichever your size still exists in. The Cloudsurfer 1 is discontinued at retail, so remaining pairs sell against a thinning size run, while the Cloudsurfer 2 has a full one.
- On Cloudsurfer 1Sizes running outMen's at AmazonWomen's
- On Cloudsurfer 2Men's at AmazonWomen's
Availability last checked Aug 5, 2026. Prices and stock change without notice.
Every spec, side by side
| Spec | Cloudsurfer 1 | Cloudsurfer 2 |
|---|---|---|
| FIT AND WEIGHT | ||
| Weight | 8.6 oz | 9.2 oz |
| Up 0.6 oz on On's own figures, most of it the added outsole rubber. Retailers and RunRepeat's scale both put the 2 nearer 9.0 oz; this page uses On's number for both generations so the comparison stays internally consistent. | ||
| Widths | D | D |
| Upper | Dope-dyed engineered mesh, 100 percent recycled polyester, with a gusseted tongue | Breathable engineered mesh with TPU eyelet reinforcements and an ungusseted tongue |
| Breathability improved, which answered a real complaint. The tongue lost its gusset and its padding, which is the change Believe in the Run described as cardboard-like and RunRepeat lists as a con. | ||
| CUSHIONING GEOMETRY | ||
| Heel stack | 32 mm | 32 mm |
| Forefoot stack | 22 mm | 23 mm |
| Drop | 10 mm | 9 mm |
| MATERIALS | ||
| Midsole | Helion superfoam in CloudTec Phase geometry | Firmer Helion superfoam in an evolved CloudTec Phase geometry |
| The whole argument about this shoe. The foam is denser and the Phase voids were re-optimized with a slight lateral bias. It lasts longer and it is less fun, and reviewers and owners disagreed about which of those matters more. | ||
| VALUE | ||
| List price at launch | $160 | $160 |
| OTHER CHANGES | ||
| Outsole | Sparse rubber coverage | Expanded, thicker rubber coverage |
| RunRepeat measured 0.6 mm of wear against the original 0.9 mm in the same test. It also firms the ride, so the durability fix and the softness complaint are the same change. | ||
| Lacing | Elastic forward lacing, prone to tangling | Traditional eyelets |
| A small fix to a real annoyance on the original. | ||
| Pod squeak | CloudTec Phase pods developed an audible squeak | Gone |
| Owners of the original reported squeaking after as little as a month of wear. Reviewers confirmed it is absent on the 2. | ||
Weighing whether to switch at all, rather than which of these two to buy? What replaced the On Cloudsurfer 1 covers the verdict on the update, what loyalists made of it, and the closest alternatives from other brands.
Buy the Cloudsurfer 1
Sizes running outDiscontinued at retail. Amazon carries what remains, so treat an in-stock size as a closing window, and expect prices to swing.
Availability last checked Aug 5, 2026.
Buy the Cloudsurfer 2
Stocked at AmazonAvailability last checked Aug 5, 2026.
Questions runners ask
- Which is lighter, the On Cloudsurfer 1 or the Cloudsurfer 2?
- The On Cloudsurfer 1, by 0.6 oz in a men's US 9 (8.6 oz vs 9.2 oz).
- Do the On Cloudsurfer 1 and Cloudsurfer 2 come in the same widths?
- Yes. Both run in D for men's sizes, so a width that fit in the Cloudsurfer 1 carries over to the Cloudsurfer 2.
- How do the stack heights compare?
- 32 mm heel and 22 mm forefoot on the On Cloudsurfer 1, against 32 mm and 23 mm on the Cloudsurfer 2. That is 0 mm less under the heel and 1 mm more under the forefoot.
- Is the Cloudsurfer 2 still the newest Cloudsurfer?
- Yes. The Cloudsurfer 2 is the current On Cloudsurfer, listing at $160 at launch.