I Have to Stop Saying, How Stupid Can You Be? Some People Are Taking It as a Challenge! 15oz Coffee Mug. Our Extra LARGE 15-ounce Coffee Mug is Larger than other 11 ounce mugs. Our Mugs are printed on both sides so you can hold them in your left and right hand and still read it. Our mugs are Printed with Quality Inks that are Baked into the Ceramic and will not Peel, Fade or come off ever! A truly permanent print that will never fade or lose its glow. Our Mugs are Dishwasher and Microwave Safe! All of our Mugs are carefully packaged in a durable gift box so they will arrive safely.