Size: 7*2*1.2cm 1.Sensory chew chain our sensory chew necklaces are made of high quality silicone and meet your requirements. They are durable and tough yet soft for a therapeutic and soothing effect. Also great to stop nails biting or thumb sucking. 2.Colours that reduce stress and anxietystudies have shown that bright, bright colours can cause aggression, hyperactivity and flooding irritation (especially yellow, orange or bright red). Our chew tags are dyed with soothing and soothing colours. Perfect for fidgeting, autism, ADHD, aggressive chewing, SPD children. 3.Easy tear-off fasteners for safetyour chew chain comes with break-off clasps that make biting safer and choke and prevent accidents. Great oral motor chew jewellery for little boys and girls. 4.Non-toxic food grade siliconeour products are free from BPA, latex, phthalates, cadmium, lead or metals. Also suitable for adults (men and women) as well as teenagers. 5.Lasting durability for most children The silicone sensory chew necklace is made of durable silicone material, which is strong to chew.