When it comes to shoe size, it's generally best to use your standard shoe or boot size when choosing motorcycle boots. If the boots are more athletic, you may need to go up a size, and you should also consider going up a size if your foot measurement is between sizes. You may even have one foot larger than the other, which is perfectly normal, and again, better to go up a size. In addition to the size of your feet, also take into account the width, since Italian boots are usually narrower than those of other brands.