Large cap wigs are going to measure 23″ in circumference. To find your head size, use a fabric tape measure. Hold the tape across your front hairline and then around to the nape and continue back to the front. This will give you your circumference. Then measure across the center from the front hairline to the back hairline at the nape. This should be around 15.5″ if you can wear large cap wig. Next, measure from ear to ear across the top of your head. This should be about 14″ if you are a large cap size. Hand-Tied wigs do give more stretch and are the most comfortable to wear.