From user joabaldwin at Shapeways.com:
Caffeine molecules support the dynamic polygonal structure of this extremely geeky coffee mug. Each atom is visible and is identifiable by its size, with the single and double covalent bonds represented by single or double lines.
This is real, non-toxic glazed ceramics, fired in a kiln. The size of a regular coffee mug, holds 7 ounces (207 ml).