Dr.Collins Perio Toothbrush for Kids takes children's oral care to another level. While most toothbrush bristles are made of nylon, Dr.Collins Perio Toothbrush for Kids uses specially treated polyester. The polyester bristles are stripped to an ultra fine point allowing further reach between teeth and below the gum line while brushing. This stripping process also makes the bristles supersoft and gentle on tooth enamel and gums.vvDr.Collins Perio for Kids is unlike any other children's toothbrush! With its innovative, patented tapering technique, Perio for Kids features supersoft, ultra slim polyester bristles that penetrate further between the teeth while gently stimulating the gums. The polyester bristles of the Perio for Kids are also less porous, creating a more hygienic brushing experience. Give your child a brushing experience that is easy and enjoyable. Give them Dr.Collins Perio for Kids!