With the Illusion mugs and espresso cups from Guy Degrenne, you'll know when your beverage is hot. These heat-sensitive porcelain cups change colour when in contact with heat. Initially grey or purple, pour in hot liquid and the colour changes to green or amethyst. Finish your cup, and as it cools, the colour changes back to its original colour. Espresso cups come as a set of two. Mugs are sold individually.
- Espresso cups: 2 1/3 oz.
- Mugs: 16 oz.