HAPI HIGH HEAT HARMONY THERMAL BRUSH. Features: Carbon and ionic dual shaped infused high heat bristles. Blend of straight and wavy bristles allow for styling tension and polishing setting. Straight bristles=polished & Wavy bristles=tension. 2" Seamless ceramic barrel, Created for Long Hair Length (mid-back & longer hair lengths). Crisscross open barrel vent pattern, barrel has fluid airflow access and absorbs the styling heat evenly for professional results. Injected non-slip rubber handle: No seams or grooves to catch/rip hair. Secure grip with removable section pick. Positive, very subtle message on back of brush: be kind to yourself. : :