Specifications: Material: Food Grade Silica Gel Size: 8.5x4.5x1.5cm Recommended Age: 3-24 months Features: 1. Baby oral care, massage protruding points, massage baby's gums, and relieve the discomfort during teething. 2. Round bottom curved surface design to avoid hurting eyes or other parts, be beneficial to bite chew. 3. Regular disinfection can effectively avoid bacteria, and it is recommended that the disinfection time should not exceed 5 minutes. 4. Use food grade silica gel, which is delicate, flexible and elastic.