High-quality plastic material flat-back cabochons are perfect for making hair bands, hair clips, hair bows, but also be used for making cards, scrapbooking, vases, phone case and many more! They have no smell and are non-toxic, has a smooth surface with high temperature resistance, that way you can use hot melt glue or other glue to stick it on the surface of any jewelry or craft you want to decorate. Choose your favorite size.