??? 4 PACK CHEWING NECKLACE - Our sensory chew necklaces set includes 4 pack: Twist shape*2, Teardrop shape*2. There is always one color or shape that you or your kids would like. ??? SAFE MATERIAL - 100% made of food grade silicone autism chew toys sensory necklaces for chewing, soft durable and long-lasting. All of our sensory chew are third party lab tested free of BPA, PVC, latex, phthalates, and lead. Our chew toys for kids are completely safe and non-toxic. ??? EASY CLEANING - Clean this silicone chewies for kids sensory with water and mild soap, and hang to dry, so easy! Dishwasher is available for this chew necklace for adults. ??? ADJUSTABLE CORD & BREAKAWAY CLASPS ??? The string of this oral chew toys for sensory is adjustable and clasps are breakaway, which make the chewable necklace safe enough. Adult supervision should always be required when using this chew fidget for kids. ??? WIDE APPLICATIONS - This adult chew toys is the perfect natural way to calm & improve focus for anxiety, autism, ADHD, SPD, etc. The soft chewies for kids sensory help to soothe pressure, effectively reduce thumb sucking, and also provide a safe outlet for stress.