It's like a curling iron inside your brush Drybar's Double Pint Round Brush features a 2.75" vented ceramic barrel that allows for maximum heat and airflow to lock in volume and curl for long-lasting styles.FeaturesIonic Technology helps reduce frizz and adds shine while stylingBristle design allows for exceptional tension and controlErgonomic, lightweight handle provides greater comfortSoft-touch finish and thumb grip prevent slipping1.75" (50 mm) Inactive Ingredients: Water, Cocamidopropyl Betaine, Decyl Glucoside, Xanthan Gum, Aloe Barbadensis Leaf Juice, Butylene Glycol, Camellia Sinensis (Green Tea) Leaf Extract, Hydrolyzed Soy Protein, Lecithin, Polysorbate 20, Fragrance, Methylchloroisothiazolinone, Methylisothiazolinone, Tocopherol, Citric Acid. Suggested Use: For curls: use vertically throughout the hair. For volume: use horizontally at the crown. UPC: 000002303486 Weight: 0.5 lbs