Flossing bristles penetrate between teeth for more effective cleaning (vs. a regular manual toothbrush based on in vitro laboratory testing). Compare to Oral-B Floss Action (Oral-B, Vitality, CrossAction Power, Oral-B Complete and Floss Action' are registered trademarks of The Procter & Gamble Business Services Canada Company or one of its affiliates. 3D White is a registered trademark of The Procter & Gamble Company or one of its affiliates. Pulsonic is a registered trademark of Braun GmbH). Unique flossing bristles penetrate deep between teeth to help remove plaque (Does not replace flossing). Green Replace-Me Bristles fade with use to remind user to replace brush head. Identifier color rings. Also compatible with most Oral-B electric toothbrushes. Does not fit Vitality' Sonic, Oral-B Sonic Complete, Pulsonic, CrossAction Power' battery toothbrush, Oral-B Complete battery toothbrush, and 3D White battery toothbrush (Oral-B, Vitality, CrossAction Power, Oral-B Complete and Floss Action' are registered trademarks of The Procter & Gamble Business Services Canada Company or one of its affiliates. 3D White is a registered trademark of The Procter & Gamble Company or one of its affiliates. Pulsonic is a registered trademark of Braun GmbH). Quality guaranteed or your money back. For product questions or concerns, contact us at 1-877-849-9949. Made in USA of USA and imported components.