Includes 30 molecular foam rollers - 6 petite, 6 small, 6 medium, 6 large, and 6 jumbo. * The unit will have a clicking sound to signify the ion feature is engaged. * Delivers 3 times the steam of regular steam setters. * Patented steam hair setting system that operates only at 120V,60Hz voltage * A carrying case and styling guide are included! * Great for all types of hair