Miradent Infant-O-BrushInfant Training Toothbrush- Training toothbrush integrated in a teething ring- Extremely soft bristles, gentle in design- Design prevents over-insertion in child"s mouth- BPA Free"The earlier, the better" - this is especially true for tooth care. The miradent Infant-O-Brush trains infants up to the age of 4 in their tooth care with the greatest of ease. The bristles are extremely soft and the shape of the brush makes a playful handling easier, serving as a teething ring and making it safe from swallowing.