Chewable jewelry is a great way to keep kids from chewing on their clothes, while letting them work through their chewing tendencies. It's also great for oral-motor stimulating activities. Non toxic, colorful, plastic jewelry that "streeeetches". Necklace diameter is 6.25" and bracelets is 2.25" in diameter. Two piece sets include a bracelet and necklace of the same color. Or choose from a set of seven necklaces or seven bracelets with a rainbow of colors.