Psilocybe cubensis, the magic mushroom. This 11-ounce Magic mushroom coffee mug is designed by me, the artist. The mug features my acrylic mushroom illustration. The design is repeated on both sides so that it looks groovy from every angle. Regardless of what you're sipping, there's no funny business here. Its definitely for science. Each mug is printed using a high-quality process that will not crack, peel, or rub off. They are Microwave safe & can be put in the dishwasher (top rack recommended). Happy sipping! - Ceramic - Dimensions: 3.79″ (9.6 cm) in height, 3.25″ (8.3 cm) in diameter - Meets FDA requirements for food and beverage safety