Bonus link! Safety tested - lead, phthalates, BPA. Mirrored surface inside to attract baby's attention. Bright colors and smiley faces to look at. Shaped just right for little hands to hold. Conforms to ASTM Specification on Toy Safety F963. www.learningcurve. com. Please retain this packaging for future reference. Links intended for attaching toys, not for teething. CE listed. Made in China.