The Oral-B Pro Clean CrossAction toothbrush was designed to deliver a superior deep clean versus an ordinary flat-trim manual toothbrush. CrossAction bristles featured in this Oral-B toothbrush are angled to precisely flex into tough to clean areas and attack plaque with every stroke. This toothbrush also features power tip bristles to reach difficult-to-access areas behind back teeth and in-between the tight areas of your unique teeth. The Oral-B Pro Clean CrossAction manual toothbrush reaches deeper and removes more plaque between teeth.* Gum stimulators along the side of the brush head gently massage your gums. The Pro Clean CrossAction toothbrush includes a tongue and cheek cleaner to remove odor-causing bacteria. This medium bristle toothbrush removes plaque from hard-to-reach areas to improve gum health. Oral-B is the #1 Toothbrush Brand Used by Dentists Worldwide. This pack of Oral-B toothbrushes include different colors of toothbrushes for households with multiple people or stocking up. A new toothbrush cleans 95% better in hard-to-reach areas**, remember to change your toothbrush every 3 months. *vs. a regular manual toothbrush **vs. one 3 months old; research with a flat trim toothbrush