Van Gogh Disappearing Ear Mug - Add Coffee or Tea and Van Gogh's Ear Disappears - Comes in a Fun Gift Box The DisappEARing Van Gogh Mug features a classic self-portrait of Van Gogh, and when you pour in a hot beverage Vincent's ear magically vanishes before your very eyes. Easy van come, easy van Gogh. 10 oz. ceramic mug. Comes in a colorful box. Heat changing cups are microwave safe, but not dishwasher safe. Hand wash only. Don't soak. Click on "The Unemployed Philosophers Guild" above the product title to see more great gifts. UPG truly has presents of mind.