Material 100% Safe - Our chew necklaces for sensory kids are made of food grade silicone, and do not contain any lead, latex, BPA, PVC, or phthalates. Our satin nylon cord won’t irritate skin or pull hair. Oral Motor Sensory Chewy Toys - Chewing necklace for kids is the perfect tools to calming or improving sensory needs. Reducing fidgeting, anxiety or increase concentration. Medium Firmness - Feather sensory chewy necklaces are soft to the teeth and gums. For highly aggressive chewers, it is not indestructible. Not Recommended for Heavy Chewers. Easy to Clean - Our oral sensory chew toys is very easy to clean with mild soap and water or place in the dishwasher. Design and Size - The silicone sensory necklace design is popular with children. Right size, the cords are easy to shorten, just simply push the cord through the breakaway clasp and retie the knot at the desired length. Are you still bothered by your child's inappropriate chewin g behavior (i.e. chewing on fingernails, pencils or clothing) ?