Compare your foot length with the boot's footbed length and find your optimal boot size. Most of skaters like their boots to be 4-5mm longer than their feet.
At this point, you should be able to choose the right size.
How to make loose boots fit better
If your feet are different in size, or for any reason you feel your boots a bit loose, here are a few simple but effective hacks to achieve a tighter fit:
- Use thicker socks
- Use thicker insoles
- Place a flat (second) insole underneath the stock insole
- Use ankle footies
- Any combination of the above