Size Guide
All sizes listed in UK sizing
| UK | EU | Foot length |
|---|---|---|
| 6 | 39 | 24.5 cm |
| 6.5 | 40 | 25.0 cm |
| 7 | 40.5 | 25.4 cm |
| 7.5 | 41 | 25.8 cm |
| 8 | 42 | 26.2 cm |
| 8.5 | 42.5 | 26.7 cm |
| 9 | 43 | 27.1 cm |
| 9.5 | 44 | 27.5 cm |
| 10 | 44.5 | 27.9 cm |
| 10.5 | 45 | 28.3 cm |
| 11 | 46 | 28.8 cm |
| 11.5 | 46.5 | 29.2 cm |
| 12 | 47 | 29.6 cm |
| 12.5 | 48 | 30.0 cm |
| 13 | 48.5 | 30.5 cm |
| 13.5 | 49 | 30.9 cm |
| 14 | 49.5 | 31.3 cm |
| UK | EU | Foot length |
|---|---|---|
| 3 | 36 | 22.0 cm |
| 3.5 | 36.5 | 22.4 cm |
| 4 | 37 | 22.9 cm |
| 4.5 | 37.5 | 23.3 cm |
| 5 | 38 | 23.7 cm |
| 5.5 | 39 | 24.1 cm |
| 6 | 39.5 | 24.6 cm |
| 6.5 | 40 | 25.0 cm |
| 7 | 41 | 25.4 cm |
| 7.5 | 41.5 | 25.8 cm |
| 8 | 42 | 26.2 cm |
| 8.5 | 42.5 | 26.7 cm |
| 9 | 43 | 27.1 cm |
| 9.5 | 44 | 27.5 cm |
| 10 | 44.5 | 27.9 cm |
| UK | EU | Foot length |
|---|---|---|
| 6C | 22 | 13.5 cm |
| 7C | 23 | 14.5 cm |
| 7.5C | 24 | 15.0 cm |
| 8C | 25 | 15.5 cm |
| 9C | 26 | 16.0 cm |
| 10C | 27 | 16.5 cm |
| 10.5C | 28 | 17.0 cm |
| 11C | 29 | 17.5 cm |
| 12C | 30 | 18.5 cm |
| 13C | 31 | 19.0 cm |
| 1 | 32 | 19.5 cm |
| 1.5 | 33 | 20.5 cm |
| 2 | 34 | 21.0 cm |
| 2.5 | 35 | 21.5 cm |
| 3 | 36 | 22.0 cm |
C = child sizes. From size 1, kids move into junior/youth sizing.
How to Measure Your Foot
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Place your foot flat on a sheet of paper
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Mark the heel and the longest toe
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Measure the distance between both points
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Compare your measurement with the chart above
Fit Tip
If you're between sizes, we recommend choosing the larger size for a more comfortable fit.
Sizing may slightly vary depending on the brand or model.
Designed for maximum comfort and performance, these men’s Cloudmonster trainers from On Running feature a breathable knit upper reinforced with synthetic overlays for better support. The lace-up fastening and padded collar ensure a secure and comfortable fit. Underfoot, a thick Helion foam midsole paired with CloudTec cushioning provides a soft, responsive feel with every step. A durable rubber outsole delivers reliable grip, finished with signature On Running branding.
We process all orders within 1–2 business days.
Delivery within the United Kingdom takes approximately 5–8 business days.
We offer free delivery across the UK.
Once your order has been dispatched, you will receive a confirmation email containing your tracking number, allowing you to track your parcel.
You may return your order free of charge within 30 days of receipt. Items must be unused, in their original condition, and returned in their original packaging.
To initiate a return, please contact our customer service team. Once your return has been approved and received, we will process your refund or exchange as soon as possible.
