The Oral-B Pro 3D White toothbrush head features an exclusive polishing cup that whitens teeth starting from day 1 by removing surface stains. Oral-B genuine brush heads are designed with new X-shape bristles that clean in areas that round ones cannot reach. Its brush head usage indicator turns bristles from green to yellow showing you when to change for 100% cleaning efficacy. Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic iO toothbrushes. Features Whiter teeth starting as of day 1 by removing surface stains Only genuine Oral-B brush heads feature X-shape bristles that clean in areas that regular ones cannot reach for optimal cleaning efficacy Oral-B 3D White features unique polishing cup to remove surface stains Guaranteed fit with Oral-B electric rechargeable toothbrushes except Pulsonic iO toothbrushes Brush head usage indicator: bristles turn from green to yellow reminding you when to change to keep 100% cleaning efficacy Oral-B is #1 brand most used