Size: 16mm diameter Avanti Ultra's popular Gel series offers a new format Ceramic heats up faster and retains heat longer, allowing for faster styling; eliminates static and frizz and leaves hair shiny and healthy Ventilated tube for better heat circulation and faster drying Firm nylon bristles provide good tension to control the thickest and unruly hair Comfortable since it fits the shape of the hand and offers optimal control without slipping The silicone gel is combined with an antibacterial powder to repel and destroy bacteria, making it cleaner and safer