The Colgate 360 Advanced Floss-Tip Bristles manual toothbrush is designed with tapered bristles that are 17 times thinner than ordinary end-rounded bristles. The purple-ended tapered soft bristles gently reach deep between teeth and along the gumline for a 4X deeper reach compared to an ordinary flat trim toothbrush. The toothbrushes unique cheek and toa-to-reach areas of the mouth. This toothbrush does not replace flossing.