1. To order the right size PowerSlide/Core Racing boot you first need to measure your foot.
2. Remove your shoe. Either wear the sock you would skate in or no sock if you skate barefoot.
3. Place a blank sheet of paper flush against the wall.
4. Place your largest foot on the piece of paper with your heel touching the wall.
5. Draw a line holding the pencil straight up and down at the end of your longest toe.
6. Measure from edge of paper against the wall to the line marked.
7. Now using that measurement find the American or European size below that comes closest to the measurement you got.
8. If room for growth is needed you can go up one size.

Example:
If your foot measured 10 1/4 inch or 260 millimeters you would order a size 8 or 41 boot.