SAFE MATERIAL - 100% food grade silicone chewy necklace, BPA free, phthalate free, lead free. Product SizeHeight 2 Inch, Width 2 Inch, Thickness 0.4 Inch ^EASY TO CLEAN - Shark tooth sensory chew necklace is easy to clean in the dishwasher or by hand wash / rinse with just water. Freezer safe, a best baby shower gift. ^DISCREET AND STYLISH DESIGN - Adjustable string & breakaway clasps make it safe to use for most children. Fashionable shark tooth design chewing necklace easy to grab, not stuck in throat. ^VERSATILE DESIGN - Silicone chewable necklace is the perfect natural way to calm & improve focus for anxiety, autism, ADHD, SPD or hand fidgeters. The soft teether toys soothes the pain of teething, it keeps your infant distracted and engaged while in your arms. ^Our sensory chewing necklace have many different styles, Puzzle, Donut, Ice Cream, Teardrop, Feather, Stars and Beads, Lollipop, Butterfly, Fox and others. Diverts chewing from fingers and clothing, Boosts confidence and reduces anxiety.