The Whirl Convertible creates long-lasting tousled waves in one whirl. The interchangeable barrel design enables you to build and customize your styling toolkit with other T3 barrels (sold separately). Technology: Digital T3 SinglePass® TechnologyDigital SinglePass® technology ensures even, optimal heat along the barrel which is the secret to one-pass styling and long-lasting results without exposing hair to unnecessary heat.T3 Tourmaline® + Ceramic TechnologyWhen heated, the unique T3 Tourmaline® + Ceramic styling surface emits negative ions that seal the cuticle, eliminate frizz and deliver shiny that last.