Developed with the involvement of dentists. Lab tested: Highest safety for children, made from non-toxic materials. Extremely soft and pleasant double-sided silicone bristles gently clean and massage your child's gums, teeth, and tongue. The non-slip ring handle is particularly easy for small hands to grip and hold, helping to develop proper brushing skills. You can hold the toothbrush with one or both hands. The charming and functional design of the toothbrush prevents it from going too deep into the mouth and avoids uncomfortable sensations.