Soft Silicone Hair On small teeth and sensitive gums 100% Medical / Food Grade Silicone BPA and PVC Free Security Shield Included Ideal for babies and children Before use, attach the toothbrush safety shield. Pass the toothbrush head through the center hole of the shield (you need to stretch it) .Kalkan rests only under the hairs. Wash your hands! Rinse the toothbrush thoroughly, especially before and after each use. It is recommended to sterilize periodically in boiling water. Note: Tooth brushes should be replaced every 8 weeks. Replace after illness. Replace if silicone is torn. It should only be used under adult supervision. Never let her chew! It's not a teether.