Stage 1 suitable for approx. 6 - 12 months. Double Sided: Use 'brush' side for gentle cleaning of baby's teeth. Use 'dimple' side to massage gums - great for teething gums. Tip: Always make sure your Jack N' Jill Silicone Finger Brush is clean. Wash with warm soapy water. Safe to sterilise. Store in a clean container. Of course, only to be used by an adult on baby/children. This is not a pacifier or teething device. Not for chewing! Discard immediately if torn/damaged. Packaging is completely biodegradable.