With stain eraser. Gently polishes away stains. Oral-B - The brand more dentists use themselves worldwide. Individual flexing sides. Plus a stain eraser. How do the flexing sides work? 3D White Pro-Flex has individually flexing sides that adjust to the unique curves and contours of your teeth and gums for an all-around clean and an invigorating whitening experience. How does the stain eraser work? 3D White Pro-Flex has a uniquely-shaped stain eraser that gently polishes to help whiten your teeth. It works together with the bristles and helps to remove up to 90% of the surface stains in hard-to-reach areas like along the gumline and in between teeth. For more oral care information, visit www.OralB.com or call 1-800-56-Oralb (1-800-566-7252). www.pg.com.