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Guide to K2 FL3X Youth and Junior Ski Boot Sizes
This size guide covers K2 FL3X Youth and Junior sizes in US, EU, and UK ski boot sizes.
Metric (cm) (inches below)
| SHELL LENGTH (mm) | MONDO POINT | US - MEN | US - WOMEN | EU | UK |
| 268 | 22.5 cm | 5.5 | 36 | 3.5 | |
| 277 | 23.5 cm | 6.5 | 37.5 | 4.5 | |
| 282 | 24.5 cm | 6.5 | 7.5 | 39 | 5.5 |
| 293 | 25.5 cm | 7.5 | 8.5 | 40 | 6.5 |
| 301 | 26.5 cm | 8.5 | 9.5 | 41.5 | 7.5 |
| 310 | 27.5 cm | 9.5 | 10.5 | 42.5 | 8.5 |
