Three silhouettes, three different fits. Get this right and you never think about it again.
The short version
| Silhouette | How it fits | What to order |
|---|---|---|
| 350 V2 | Snug, close to true to size | Your normal US size; go up a half if you're wide-footed |
| Foam Runner | Runs big, whole sizes only | Size down one from your normal US |
| Slides | Runs big, whole sizes only | Size down one; size down two if you like them tight |
Every pair we sell is unisex. On the 350 V2 women's sizes are labelled W; on Foam Runners and Slides the listed size is the men's US scale, so women subtract roughly 1.5 (a women's 8 is about a men's 6.5).
US / UK / EU conversion — men's
| US | UK | EU | CM |
|---|---|---|---|
| 4 | 3.5 | 36 | 22.5 |
| 5 | 4.5 | 37.3 | 23.5 |
| 6 | 5.5 | 38.7 | 24 |
| 7 | 6.5 | 40 | 25 |
| 8 | 7.5 | 41.3 | 26 |
| 9 | 8.5 | 42.7 | 27 |
| 10 | 9.5 | 44 | 28 |
| 11 | 10.5 | 45.3 | 29 |
| 12 | 11.5 | 46.7 | 30 |
| 13 | 12.5 | 48 | 31 |
US / UK / EU conversion — women's
| US (W) | US (M) | UK | EU |
|---|---|---|---|
| 5 | 4 | 3.5 | 36 |
| 6 | 5 | 4.5 | 37.3 |
| 7 | 6 | 5.5 | 38.7 |
| 8 | 7 | 6.5 | 40 |
| 9 | 8 | 7.5 | 41.3 |
| 10 | 9 | 8.5 | 42.7 |
| 11 | 10 | 9.5 | 44 |
How to measure your foot properly
- Stand on a sheet of paper with your heel against a wall, late in the day when your feet are at their largest.
- Mark the tip of your longest toe — which is not always the big toe.
- Measure heel to mark in centimetres, then add about 0.5 cm of wearing room.
- Match that number to the CM column above.
Measure both feet and go with the larger one. Most people have a half-size difference and never notice until it matters.
Half sizes
The 350 V2 comes in half sizes and you should use them. Foam Runners and Slides don't — if you land between sizes on those, take the smaller one, because both stretch and relax with wear while a loose molded shoe never tightens back up.
Wide feet
The 350 V2's Primeknit gives across the forefoot but the cage over the midfoot doesn't. If you know you're wide, go up a half size on the 350 V2 and stay at your calculated size on the Foam Runner, which is the roomiest thing we sell.
Want the long version with photos and the specific edge cases? Read the 350 V2 sizing guide, the Foam Runner sizing guide or the Slides sizing guide. Still unsure — email info@kicksondeck.store with your usual size and brand and we'll tell you what to order.