Feature: 1. 【Upgrading】: 5 Different colors (red, purple, green, blue, sky blue) packaging, using popular building block shape design, to bring more freshness to children. Made of high-quality silicone material, it will chew stronger and last longer. 2. 【Reduction of Anxiety】: This chew necklace helps greatly reduce the anxiety and stress of patients with sensory input disorders, and is helpful for autism, hyperactivity, SPD, and oral exercises. They provide a safe alternative to chewing clothes, pens, tables, and hands. 3. 【Convenient To Use】: Each chew necklace weighs only about 13g. You can hardly feel what you are wearing. They are very easy to clean and dry, light in weight, and very convenient to use at home or outdoors. 4. 【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 chew 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. Specification: The silicone Chew brick sensory chewing necklace are made from 100% food grade silicone, baby can chew on them. The silicone Chew brick sensory chewing necklace easy to clean. Design in colourful assortment. Specification: Material: Food grade silicone Color: red, purple, green, blue, sky blue Weight: about 13g/pcs, about 65g/set Size: about 7.5*1.2*1.2cm Package List: 5 pcs Chew Necklaces Note: Due to the different monitor and light effect,the actual color maybe a slight different from the picture color. Please allow 1-2cm differs due to manual measurement.