Nautica slip on shoes barely used - it says size 5 but it’s more like a 7.

I bought these shoes for a flight but never used them. I wore them once or twice to try them on but bit more. My toddler tried them on, too 😄. They are in great condition! It says size 5 on the shoes but it’s more a size 7-7.5. I think the European size 37 is more accurate in this case.