This toothbrush is designed with super soft bristles that gently clean and stimulate your little one's gums and teeth. Start teaching your baby good brushing habits with the Koala Toothbrush! This training toothbrush is designed specifically for infants' and toddlers' small, sensitive mouths. Intended to be introduced when babies first begin teething and they instinctively want to stick everything in their mouths. The soft silicone bristles will gently massage sore teething gums when the brush is rubbed against them. The stopper prevents toddlers from introducing the toothbrush too deep inside the mouth.