CAUTION: This is not a toy. Adult supervision required under 3 years of age. Do not leave a child unattended with this product. EASY TO USE AND CLEAN: Getting a toothbrush in (or out of) your baby’s mouth can be a nightmare, but our finger toothbrushes make oral hygiene easy. The ergonomic shape fits comfortably on your finger, and the soft, resilient bristles provide a gentle, massaging feel. PERFECT SIZE - The open inside diameter of this toothbrush is 0.75", and 2.1" long. It's very suitable for adult fingers of all sizes, and perfect size for baby's mouth. It can be used repeatedly and suitable for 3 - 24 months baby. 100% SAFE: Our baby finger toothbrush is made of food grade silicone material, BPA Free, which is very soft and safest, no damage with teeth and gums of your baby in the process of cleaning them. MULTI-FUNCTIONAL: This baby toothbrush has a double-sided design. One side has the soft bristles feature while the other side has delicate massage bumps. You can use toddler's finger toothbrush to clean their teeth, and use the back clean their tongue.