Material: food grade siliconSize: 7 * 2 * 1.2cmColor: blue, red, green, purpleQuantity: 4Package content: 4 * building block chewing necklace molar bar blue+red+green+purple1. Sensory chewing chain Our sensory chewing necklace is made of high-qualitysilicon, which meets your requirements. They are durable, tough and soft, with healing and soothing effects. It also prevents nail biting or thumb sucking.2. Research on colors to reduce stress and anxiety shows that bright and bright colors can causeaggressive, hyperactive and flood like stimuli (especially yellow, orange or bright red). Our chewing labels are dyed in soothing and soothing colors. It is very suitable for children with restlessness, autism, hyperactivity disorder, aggressive chewingand SPD.3. It is easy to tear off fasteners to ensure safety. Your chewing chain is equipped with a break buckle, which can make the occlusion safer, suffocate and prevent accidents. Suitable for little boys and girls to chew jewelry.4. Non toxicfood grade silica gel products do not contain bisphenol A, latex, phthalate, cadmium, lead or metal. It also applies to adults (men and women) and adolescents.5. For most children, the durable silicon sensory chewing necklace is made of durable siliconmaterial with strong chewing power.