Up to 50% better than heat transfer (Metal barrel provides up to 50% better heat transfer when compared to Conair plastic vented brushes). Hi-speed style. Vents allow airflow from blow-dryer to reach hair for fast drying and styling. Smooth and straighten, or curl and wave hair. Professional-quality results. Contains 10% copper coating. www.conair.com. Facebook. Twitter. Pinterest, Instagram. Made in China.