Keep kids engaged while they learn to brush. The Nickelodeon 2Pc Tooth Brush Set For Kids toothbrush interacts with a fun app that helps kids brush better and for longer. Kids have fun while learning techniques that will last a lifetime. These standard-sized 2Pc Tooth Brush Setheads have rubber molding to protect children's sensitive teeth. The soft bristles are designed especially for small teeth and developing gums. Ergonomically designed for little hands, your child will never feel like brushing is a pain. It will be great for you kids.