Material: Silicone Size: 75*12*12mm Color: A:sky blue + pink + purple, B:blue + green + sky blue Quantity: 3 pieces Package content: 3 pieces * chew necklace 1. Sensory chewing chain Our sensory chewing necklaces are made of high quality silicone and meet your requirements. They are long-lasting and tough, yet soft for a therapeutic and calming effect. Also great for stopping nail biting or thumb sucking. 2. Colors that reduce stress and anxiety Studies have shown that bright, bright colors can cause aggression, hyperactivity and overstimulation (especially yellow, orange or bright red). Our chewing tags are colored with calming and soothing colors. Perfect for fidgety, autism, ADHD, aggressive chewing, SPD kids. 3. Simple tear-off fasteners for safety Our chewing chain is supplied with breakable fasteners, which make biting safer, suffocate and prevent accidents. Great oral motor chewing jewelry for little boys and girls. 4. Non-toxic food-grade silicone Our products are free from BPA, latex, phthalates, cadmium, lead or metals. Also suitable for adults (men & women) and young people. 5. Lasting durability for most children The silicone sensory chewing chain is made of durable silicone material that is tough to chew.