The extended length barrel quickly creates loose, modern curls and waves and makes it easier to style long hair, or style the back sections on shorter styles. The combination of NanoIonic MX and Bio Ionic Moisturizing Heat® Technology lock in moisture, seal the cuticle, and ensure curls last long, and stay conditioned and bouncy instead of dull and limp The extended barrel design allows you to curl the back of your head easier whether the hair is short or long.