Most manufacturers classify cap sizes differently, this guide will help you to measure the circumference of your head. Using this measurement and the chart below will assist you in selecting your correct wig cap size. Most wigs have adjustable, elastic band with Velcro or hooks straps for small adjustments, but the average wig size will fit most customers.
Before measuring, make sure to flatten your hair and use a cloth tape measure. Be sure not to pull or stretch the tape as this will result in the wrong cap size. Starting at the front hairline, measure around your head, behind one ear to the nape of your neck, back toward your other ear, and end back at the front of your hairline. The tape measure should lie just above the ear and along your natural hairline. If your measuments fall in between sizes on the chart, round it up to the larger size.