Interactive suggestion based on this model’s fit offset (+0 US). Always confirm with a retailer return policy.
Boston shares the Arizona footbed, so EU size usually carries over. Enclosed toe can feel roomier — slim feet often prefer Narrow or the next-smaller EU if between. Expect cork mold and soft suede give over the first weeks.
General reference chart (not brand-official). EU is this model’s primary system. Interactive tool above adjusts for this model’s fit offset; the table is crawlable reference.
| US | UK | EU | cm |
|---|---|---|---|
| 6 | 5.5 | 39 | 24.0 |
| 6.5 | 6 | 39.5 | 24.5 |
| 7 | 6.5 | 40 | 25.0 |
| 7.5 | 7 | 40.5 | 25.5 |
| 8 | 7.5 | 41 | 26.0 |
| 8.5 | 8 | 42 | 26.5 |
| 9 | 8.5 | 42.5 | 27.0 |
| 9.5 | 9 | 43 | 27.5 |
| 10 | 9.5 | 44 | 28.0 |
| 10.5 | 10 | 44.5 | 28.5 |
| 11 | 10.5 | 45 | 29.0 |
| 11.5 | 11 | 45.5 | 29.5 |
| 12 | 11.5 | 46 | 30.0 |
| 13 | 12.5 | 47.5 | 31.0 |