Aquafresh Flex Tip Toothbrush with the unique flexible tip designed to adapt to the shape of each tooth. At the very top of the brush head there is an extra, separate set of bristles that self-adjusts to the curvature of your teeth. The flexible tip is designed to adapt to the shape of each tooth as you brush, to help clean hard-to-reach areas. Interdental bristles are designed to help clean deeper between the teeth. Patented flexible neck and head bend to absorb brushing pressure to help prevent gum irritation.