[User Age]The baby/kids electric toothbrush alternative head is appropriate for only four years old. Children must use this product under parental supervision. [High-quality material]The toothbrush is made from smooth and tremendous materials to protect children's gums [ Free]No is used in the producing process. Xige cares to your child's growth. [Pack of 6]Each pack of 6 substitute brush heads lasts for a yr and a half. For splendid results, update brush heads every 3 months. Type:SG-025 for only 4 years old Colour:As Shown Material:Plastic Package Contents: 6 * toothbrush replacement head Only the above package content, diverse merchandise usually are not included. Note: Light mirrored image and diverse displays may cause the colour of the item in the photo just a little different from the genuine thing. The dimension allowed error is +/- 1-3cm.