16 inches of healthy, virgin hair from an 10 year old girl. This piece is 19 inches long but has some split ends that you may want to trim off and we allowed for that in listing it as 16 inches instead of 19 inches. Never around smokers, washed hair once, sometimes twice a week, no products used, and only curled a few times ever. The true measurement around is 2 1/4 inches. This is a great piece of the most beautiful red colored hair.