These solid glass canisters, made in Italy by the famous glass manufacturer IRMEL, are thick glass with metal dome tops. They hold 2 cups of coffee beans, sugar, or whatever you'd like.
Each glass container has a thick plastic rim at the top to give you an airtight seal. The tops are iridescent, and made of light aluminum. The pair are fuchsia and azure (that's "red" or "blue" for the men out there).
The set works nicely for putting sugar in one, and packets of sweetener in the other.