Good to know- The CrossAction bristles with 16° angle perfectly fit and adapt to each tooth to keep your smile healthy- The green bristles turn yellow when it's time to replace your brush head thanks to the CleanMaximiser technology- Remove up to 100% more plaque compared to a manual toothbrush and keep those pearly whites gleaming- It's compatible with most Oral-B handles (except Pulsonic & iO handles)