Starry starry night.... Pour a hot beverage and 11 constellations emerge before your eyes.
Holds 10 oz / 300mL. Disappearing mugs are not dishwasher safe but are microwave safe. 
Includes the constellations:

Cassiopeia
Perseus
Sagittarius
Hercules
Andromeda
Scorpius
Taurus
Ursa Major
Ursa Minor
Orion
Castor & Pollux