Oral B Toothbrush Kids Pro Expert Stage 2 (2-4 Years)Designed explicitly for children matured 2 4, Stage 2 toothbrush highlights plans with disney characters to make brushing fun. At this stage, kids are figuring out how to brush, and their child teeth are as yet developing in. Since their mouths are little and their hands flimsy, it's imperative to pick a brush only for them. The Stage 2 brush suits their particular needs.