Circular thermal brush – 43mm barrel; Firm nylon bristles are infused with tourmaline; Ceramic barrel with wide vents; Rubberized, ergonomic black handle; Lightweight, balanced construction; Ceramic and tourmaline, both natural sources of negative ions and far-infrared heat, eliminate static and frizz, leaving hair shiny and healthy; Ceramic barrel distributes and retains heat efficiently for faster styling. Infrared heat, generated during drying, is gentle on hair for drying with less damage; Lightweight construction is ergonomic for all-day use; Vents on the barrel circulate heat for more efficient drying; The nylon bristles maintain good tension to control even the thickest, most unruly hair; Ultra comfortable, rubberized grip handle provides total control, a strong grip, and ultimate comfort while styling.