Glass Material: Made of quality glass material, strong enough to use; Transparent bottle makes it better to display the items Bamboo Base: The base is made of high -quality bamboo materials. There is a circle of rubber around the base to make it better seal effect. The base and bottle are not easy to separate. Size Reference: 10 packs 30ml glass favor jars, finish product: 32mm/1.26" in diameter, 85mm/3.3" high, inner diameter: 25mm/ 1", case: 18x32mm/0.7x1.26" Decoration Bottles: You can put seashell, sands, flower, small statues, boat into the glass bottles to DIY a beach scene or other diy miniature landscape. Wide Usage: These glass favor jars can be used to store candy, spices, specimen, flowers, jewelry, small crafts like seashell, beads; or for parties, birthdays, weddings and more decor.