WHAT IT IS Olivia Garden NanoThermic Flex Combo Brush features 100 boar bristles and ionic properties. WHAT IT DOES NanoThermic Flex Combo Bristles Brush has comfortable ball point tips for styling and smoothing. Also great for extensions. Key Benefits Dual Curve Shape Perfectly hugs the scalp for incredible comfort amp superior styling control Latest Ceramic Technology Heats up faster amp retains heat longer Achieves superior amp long lasting hairstyles Tourmaline Ion Technology Hydrates the cuticle Adds more shine to the hair and eliminates frizz amp flyaways Flexible Vented Head Design Adjusts tension based on hair type Easier amp gentler detangling Extra large vents allow greater airflow Reduces drying time Unique handle design Unique snag free ring Easy grip ergonomic handle for greater overall comfort Retractable sectioning pick