On Cloud Zone Alloy Rock
£150.00 £130.00
Head to toe grey, the Cloud Zone in Alloy and Rock is as clean as a running shoe gets. The soft mesh upper with a tonal On logo on the side blends seamlessly into the matching grey midsole and outsole, creating a one-color silhouette that looks sharp in any setting. Lightweight construction and CloudTec cushioning underneath make it just as comfortable on a long walk as it is on an easy run.
On Cloud Shoes Size Guide
On Cloud trainers use standard On sizing and most styles fit true to size, so we recommend ordering your usual UK size. If you are between sizes, or looking at a chunkier model like the Cloudmonster or Cloud 5, we suggest going up half a size for extra room in the toe.
Men's Size Chart
| UK | EU | US | Foot Length (cm) |
|---|---|---|---|
| 6.5 | 40 | 7 | 25.0 |
| 7 | 40.5 | 7.5 | 25.5 |
| 7.5 | 41 | 8 | 26.0 |
| 8 | 42 | 8.5 | 26.5 |
| 8.5 | 42.5 | 9 | 27.0 |
| 9 | 43 | 9.5 | 27.5 |
| 9.5 | 44 | 10 | 28.0 |
| 10 | 44.5 | 10.5 | 28.5 |
| 10.5 | 45 | 11 | 29.0 |
| 11 | 46 | 11.5 | 29.5 |
| 11.5 | 46.5 | 12 | 30.0 |
| 12.5 | 47.5 | 13 | 31.0 |
| 13 | 49 | 14 | 32.0 |
Women's Size Chart
| UK | EU | US | Foot Length (cm) |
|---|---|---|---|
| 3.5 | 36 | 5 | 22.0 |
| 4 | 37 | 5.5 | 22.5 |
| 4.5 | 38 | 6 | 23.0 |
| 5 | 38.5 | 6.5 | 23.5 |
| 5.5 | 39 | 7 | 24.0 |
| 6 | 40 | 7.5 | 24.5 |
| 6.5 | 41 | 8 | 25.0 |
| 7 | 42 | 8.5 | 25.5 |
| 7.5 | 42.5 | 9 | 26.0 |
| 8 | 43 | 9.5 | 26.5 |
| 8.5 | 44 | 10 | 27.0 |
How to Measure Your Foot
Place a sheet of paper on the floor against a wall. Stand on it with your heel touching the wall. Mark the tip of your longest toe, then measure from the wall to the mark in centimetres. Match that number to the Foot Length column above. If you land between two sizes, choose the larger one.
Fit Notes
On Cloud shoes fit true to length but can feel slightly narrow in the toe box. If you have wider feet, some models such as the Cloudrunner, Cloudsurfer and Cloudgo come in a Wide fit. Measure both feet and use the larger measurement, since most people have one foot slightly bigger than the other.
Related products
COLLECTION
USER PORTAL
REACH US
- 169 Regent St., London, W1B 4JG, United Kingdom
Payment Methods
© 2026 On Cloud All Rights Reserved

Reviews
There are no reviews yet.