1. Material: silicone + PP 2. Size: 4.2x10.7cm 3. Suitable age: more than 6 months 4. Soft bristles, gently care for each baby teeth 5. Seamless, easy to clean, no dirt 6. Reminder: Silica gel easily absorbs food pigments and changes color. This is a normal phenomenon. It is recommended to replace it with the nipple every three months or so