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Kith x Birkenstock Boston Braided 'Ultra Blue'
Birkenstock · Style BR1032170
· Released 2025-12-08
from $685.70
Select a size:
Size chart — Birkenstock
Use the chart below to convert between US, UK, EU and JP sizes.
Men
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 7-7.5 | 7 | 40 | 26 |
| 8-8.5 | 7.5 | 41 | 26.5 |
| 9-9.5 | 8 | 42 | 27 |
| 10-10.5 | 9 | 43 | 28 |
| 11-11.5 | 9.5 | 44 | 28.5 |
| 12-12.5 | 10.5 | 45 | 29 |
| 13-13.5 | 11.5 | 46 | 30 |
| 14-14.5 | 12 | 47 | 30.5 |
| 15-15.5 | 13 | 48 | 31 |
| 16-16.5 | 14 | 49 | 32 |
| 17-17.5 | 14.5 | 50 | 32.5 |
Women
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 4-4.5 | 2.5 | 35 | 22.5 |
| 5-5.5 | 3.5 | 36 | 23 |
| 6-6.5 | 4.5 | 37 | 24 |
| 7-7.5 | 5 | 38 | 24.5 |
| 8-8.5 | 5.5 | 39 | 25 |
| 9-9.5 | 7 | 40 | 26 |
| 10-10.5 | 7.5 | 41 | 26.5 |
| 11-11.5 | 8 | 42 | 27 |
Kids
| US | UK | EU | JP (cm) |
|---|---|---|---|
| 6-6.5 | 7 | 24 | 15 |
| 7-7.5 | 8 | 25 | 16 |
| 8-8.5 | 8.5 | 26 | 16.5 |
| 9-9.5 | 9 | 27 | 17 |
| 10-10.5 | 10 | 28 | 18 |
| 11-11.5 | 11 | 29 | 18.5 |
| 12-12.5 | 11.5 | 30 | 19 |
| 13-13.5 | 13 | 31 | 20 |
| 1-1.5 | 13.5 | 32 | 20.5 |
| 2-2.5 | 1 | 33 | 21 |
| 3-3.5 | 2 | 34 | 22 |
14-day returns & equal-value exchanges — policy
Size, price & UPC details
| Size | Price | UPC | Delivery |
|---|---|---|---|
| 13 | $685.70 | — | 3-4 business days |
About the Kith x Birkenstock Boston Braided 'Ultra Blue'
| Silhouette | Boston |
|---|---|
| Colorway | Ultra Blue |
| Season | 2025 |
| Release Date | 2025-12-08 |