Dragon's Blood Bottled Die contains: 100% natural Beeswax molded D6 Water Vegetable Oil Powdered Mica Glitter Clear plastic cap 1ft of rainbow cord Because of these specific ingredients, the die inside will last for a long time with gentle usage. These do not need to be shaken, just turned upside down and then back up again to look at the viewing port on top. The die itself is fairly strong, made from molded Beeswax, and is suspended in a water/oil mixed with the Mica coloring and Glitter. The cap is sealed with a high strength adhesive bond, but the bottle is glass.