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AI styling preview. Colors and details may differ from the original product photos.
ADER ERROR x Birkenstock Boston Flap Level 'Blue'
Birkenstock · Style 1033806
· Released 2026-08-06
from $483.95
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 |
Size sold out? Notify me
Size, price & UPC details
| Size | Price | UPC | Delivery |
|---|---|---|---|
| US M 8 / US W 10-10.5 / EU 41 | — | 220116052827 | Out of stock |
| US M 9 / US W 11-11.5 / EU 42 | — | 192763504922 | Out of stock |
| US M 10 / EU 43 | — | 192763504953 | Out of stock |
| US M 11 / EU 44 | — | 192763504984 | Out of stock |
| US M 12 / EU 45 | — | 192763505011 | Out of stock |
| US M 13 / EU 46 | — | 192763505042 | Out of stock |
| US M 14 / EU 47 | $483.95 | — | 5-7 business days |
About the ADER ERROR x Birkenstock Boston Flap Level 'Blue'
| Silhouette | Boston Flap |
|---|---|
| Colorway | Blue |
| Season | 2026 |
| Release Date | 2026-08-06 |
What buyers say about us
Selected customer feedback. Feedback about our store and the buying experience, from sold.supply, eBay and Trustpilot. The source and purchase verification are shown on each card. These are not product ratings.
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Smooth and easy transaction! Fast Delivery! Shoes are great!Purchased item
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La entrega fue muy rapida y la atención para la devolución también.
Gracias.Easy experience
Easy experience. My wife loves her sneakers!Purchased item
adidas SL72 RS 'Collegiate Orange Bright Blue'
No hassle and shoes look just as good as photos
Ordered with no hassle and the checkout was quick. The shoes look just as good as the photos, fit true to size, and feel comfortable right out of the box. I'd happily order from here again.Purchased item
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