On · Cloudmonster
Cloudmonster 3
Suggested starting size
…
Working out your size from the items you added.
Everyone who reported
Not enough reports yet.
We publish a summary once at least five different people have reported on this product. Until then, no average is better than a misleading one.
Fit reports
No reports yet.
Be the first. Which size you bought and how it fit takes under a minute.
Questions
Ask someone who owns it.
Where the length ends on someone your height, whether it rolls when you run, how it washed. Answers from people with a fit report on this product show the size they own.
Sign in to ask people who own this.
What the maker publishes
Specifications
- Best for
- Cushioned neutral daily training
- Heel-to-toe drop
- 6 mm
- Weight
- 240 g
- Widths offered
- B, D
- Upper
- Knit
Verified against the maker's page on 2026-09-17.
Sizes this product is sold in
On size chart
What each On size is built for.
| US women's | UK | EU | MX | Foot length (cm) |
|---|---|---|---|---|
| 5 | 3 | 36 | 22 | 22 |
| 5.5 | 3.5 | 36.5 | 22.5 | 22.5 |
| 6 | 4 | 37 | 23 | 23 |
| 6.5 | 4.5 | 37.5 | 23.5 | 23.5 |
| 7 | 5 | 38 | 24 | 24 |
| 7.5 | 5.5 | 38.5 | 24.5 | 24.5 |
| 8 | 6 | 39 | 25 | 25 |
| 8.5 | 6.5 | 40 | 25.5 | 25.5 |
| 9 | 7 | 40.5 | 26 | 26 |
| 9.5 | 7.5 | 41 | 26.5 | 26.5 |
| 10 | 8 | 42 | 27 | 27 |
| 10.5 | 8.5 | 42.5 | 27.5 | 27.5 |
| 11 | 9 | 43 | 28 | 28 |
| 12 | 10 | 44 | 29 | 29 |
Converting from another brand? See your size at every brand from one item you already own.