Longer hair needs a wider bristle for professional styling. The bristles of this Professional Quick Dry Oval Brush are 3.25" in diameter and the length of the barrel is 6”, allowing you to grab more hair at one time. Varying bristle lengths thread easily through the hair, decreasing drying time and increasing overall styling capabilities. By gently stretching the hair while drying, you can achieve maximum straightening and maximum volume. Natural bristles are gentle to the cuticle, encouraging shine.