Aquafresh Flex Tip Max-Active with the extra, yellow tip that flexes to adapt for a custom clean. The flexible tip is designed to adapt to the shape of each tooth to help clean hard-to-reach areas. The patented flexible neck and head bend to absorb brushing pressure flexible neck and head bend to absorb brushing pressure to help prevent gum irritation. The large, soft innovative handle is designed to help you effectively brush away plaque.