Oral B Refill Trizone 5 units provides a deep cleaning thanks to its triple action technology. The grip is very comfortable to the touch to make it a pleasant experience during the day. Its filaments perform a sweeping motion between the teeth similar to brushing with a manual toothbrush, but with a much more thorough cleaning. Trizone filaments reach into the plaque between the teeth to loosen it & allow you to brush your teeth in the same way as with a normal manual toothbrush. The Tri Zone toothbrush head is made to deliver the superior* results of a power toothbrush, but helps you brush as you would with a manual brush for easy handling. It even features 3 bristle zones for a comprehensive clean. The Tri Zone toothbrush head provides a deep clean with triple-zone technology. Its bristles sweep in-between teeth to help you brush as you would with a manual, but with the added benefits of power. Three bristle zones feature a power tip for back teeth, shorter bristles to clean surfaces & longer sweeping bristles that can reach 2x deeper between teeth than a regular manual toothbrush. Dentists recommend replacing your toothbrush every 3-4 months. Oral-B replacement toothbrush heads feature Indicator bristles that fade halfway to help remind you when to replace your toothbrush head so you maintain a superior clean. Key Features Dynamic angled power tip designed to access hard-to-reach areas like the very back teeth; Non-sweeping bristles pulsate on the entire surface of your teeth to fight plaque build-up; Sweeping, pulsating bristles reach deep between teeth for a stimulating brushing experience; Compatible with the entire lineup of Oral-B rechargeable electric toothbrush handles, except for Pulsonic toothbrushes; Indicator bristles fade as a sign to replace your toothbrush head for a better clean (about every 3 months); Promotes cleaner teeth & healthier gums vs. a regular manual toothbrush; Box Contents 1 x Braun Oral-B Trizone Toothbrush Heads Pack of 5