These are children that use all their teeth. They chew frequently but not hard. These children will break down the silicone faster then mild chewers and will need to be replaced every 3 and 6 months.
All beads are made with 100% food grade silicone. They are free of BPA, Lead, Phthalates, Mercury and Cadmium. They are FDA, CCPSA and LFGB approved.