The size was measured from buckle fold to center Hole. There are a total of five holes, 1" apart. It is recommended to select size from buckle fold to center hole that better matches measurement of your waist or where you wear this belt. If you plan to use this belt strap for regular prong buckles, it would be more comfortable to select a size that is about 1" or 2" bigger than the actual measurement of your waist or where you wear this belt.
