Premium Quality and Safe Guarantee - Our Electric Toothbrush heads have passed ISO, CE, ROHS, FDA certification, and brush heads come with sealed container for hygienic storage, effectively protect your toothbrush head from outside pollution, it is a best gift for women, man, or yourself. Extra-Soft Bristles - The rotating PowerHead features extra-soft bristles, so your child can get a thorough clean as they learn proper oral care habits. Ideal for ages 3+, the design is perfect for a smaller mouth, putting a powerful yet gentle clean in their growing hands. All Round Clean - Round brush head is inspired by dental professional tools for a tooth-by-tooth clean, with specially engineered bristles for optimal tooth coverage For oral b braun Kids replacement brush heads has special, smaller bristles which provide gentle, extra-soft brushing and make it ideal for the smaller teeth and mouth-size of children. Recommended for children from 3 years onwards. Features- 1. Cleans teeth and massages gently 2. Inter-dental tips : Penetrate hard-to-reach areas 3. Effectively removes plaque without irritating 4. Indicator bristles : Fade halfway to signal when to replace your brush head.