Oral-B Pro Kids Frozen Replacement Electric Toothbrush Heads The Oral-B Pro Kids Frozen replacement electric toothbrush heads, featuring characters from Disneys Frozen, are specially designed for kids ages 3 and up. They feature extra-soft bristles that are gentle on kids gums, a smaller head for little mouths, and a unique round head for superior cleaning of each tooth individually. Each brush head features characters from Frozen that your kids will love. All Oral-B Kids replacement heads are compatible with all Oral-B Kids handles. specially designed for gentle cleaning of childrens teeth small round head suitable for small childrens mouths gentle on gums with very soft fibers suitable for children 3+ years old with characters from the Disney Frozen movie compatible with all Oral-B Kids 3+ electric toothbrushes