This toothbrush is sized to surround and clean their pearly whites and reach tricky back teeth while protecting their tender gums with soft bristles. The cushioned brush head with extra soft bristles is designed to help protect tender gums. This toothbrush head is designed to fit the small mouths of kids (ages 0-2). It helps little hands still learning to brush.90% of Kids brush longer when using the compatible Disney Magic Timer App by Oral-B.