For ordinary low-top shoes, such as board shoes or running shoes, because of their small cavity capacity and limited height increase, and considering comfort, the height increase pad should not exceed 1.5cm!

2. High-top casual shoes

For this kind of shoes, such as Vance and Converse's high-top canvas shoes, or Air Force No.1 high-top, there is more room, and the height of the insole can be controlled within 2.5cm!

3. Martin boots or boots

This shoe type is bigger than the first two, and it can be increased within 3.5cm considering the comfort!