Birth - 3 years. Its never too early to start working on your little's oral hygiene! These sets include twelve infant toothbrushes in assorted colors. Each brush has an attached handle for the child to hold on to when developing the fine motor skill of teeth brushing and the bristles are very soft to avoid harming the child's gums.This toothbrush is the perfect starter toothbrush. Available in a set of 12 toothbrushes or a set of 12 toothbrushes with a rack with a clear lid for storage.