Most of them have glitter or rainbow mizuhiki to give them a dazzling look. The three-strand ones are about 2cm in size, but there may be slight variations depending on the thickness of the mizuhiki and the way it is woven. The back is secured with white glue. I think you can use them in various ways, such as for wrapping, keychains, mask charms, small envelopes, and small gifts. Please see my profile.