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Flow Size Chart
All boot to binding correlations are approximate due to variation between models and brands. Physically check that your boot fits your binding before you buy them and head to the mountain.
Binding Size Correlation
| Flow Binding Size | XS | S | M | L | XL |
| Youth & Men's Boot Size | 11Y - 1 | 13Y - 4.5 | 4.5 - 8.5 | 7.5 - 11.5 | 10.5 - 15 |
Boot Size Conversion
| US Men's | US Women's | EUR | UK | Japan / Mondo (cm) |
| 11Y | 29.5 | 11 | 17.5 | |
| 12Y | 30.5 | 12 | 18 | |
| 13Y | 31.5 | 13 | 19 | |
| 1 | 32 | 0 | 19.5 | |
| 2 | 33 | 1 | 20.5 | |
| 3 | 34.5 | 2 | 21.5 | |
| 4 | 35.5 | 3 | 22 | |
| 4.5 | 6 | 36 | 3.5 | 22.5 |
| 5 | 6.5 | 37 | 4 | 23 |
| 5.5 | 7 | 37.5 | 4.5 | 23.5 |
| 6 | 7.5 | 38 | 5 | 24 |
| 6.5 | 8 | 39 | 5.5 | 24.5 |
| 7 | 8.5 | 39.5 | 6 | 25 |
| 7.5 | 9 | 40 | 6.5 | 25.5 |
| 8 | 9.5 | 41 | 7 | 26 |
| 8.5 | 10 | 41.5 | 7.5 | 26.5 |
| 9 | 42 | 8 | 27 | |
| 9.5 | 42.5 | 8.5 | 27.5 | |
| 10 | 43 | 9 | 28 | |
| 10.5 | 44 | 9.5 | 28.5 | |
| 11 | 44.5 | 10 | 29 | |
| 11.5 | 45 | 10.5 | 29.5 | |
| 12 | 45.5 | 11 | 30 | |
| 13 | 47 | 12 | 31 | |
| 14 | 48.5 | 13 | 31.5 | |
| 15 | 49.5 | 14 | 32.5 |