?100% SATISFACTION GUARANTEE?- We are totally sure you will love these chew toys and so your little one. However, if for any reason our product does not meet your expectations, you can return it to us within 30 days for a replacement or refund. Our’s top priority is customer satisfaction. ?Instructions and suggestions? This product is not a toy. All users must be under constant and direct supervision of an adult at all times while the chewy necklace is in use. The clasp and cord are NOT intended for chewing. Wear and tear is expected given the nature of use. Please do not use in damaged, wash thoroughly before first use and after each use, include the string and the clasps. ?100% New Upgrading Material?Child safety is our number one priority! Our sensory chewelry is made of premium food-grade silicone, non-toxic, odor-free, smooth, strong, free of harmful substances such as BPA, phthalates, stronger and longer to chew, the top choice for autism kids. ?Colors that Reduce Stress and Anxiety? - Studies have shown that bright, vibrant colors can induce aggression, hyperactivity, and sensory overload. Our chew necklace come in calming and soothing color tones, not too hard and not too soft, all necklaces come in medium hardness so they feel just right, perfect for kids with sensory needs autism, ADHD, SPD and those who are aggressive chewers. ?Safer for Sensory Motor Needs?Our set of Sensory Chewing Necklaces is specially designed for children with ADHD and autism, oral motor, SPD and biting needs,which can effectively reduce anxiety, keep calm, and relieve gum pain to a certain extent. Chew necklace is more hygienic and safer than children chewing on clothes, hair, fingers, buttons, pens and other items.