Bird Excuse Me Birdseed Mug. This premium grade coffee mug cup is professionally printed in the USA with fade resistant, non-toxic inks. Our ceramic mugs are decorated on both sides so right handed or left handed users can enjoy them equally. All mugs are fired at over 350 degrees to ensure each white coffee mug will last a long time without scratching or fading. Premium mug made from New Bone China (No animal products). Hold about 400ml/13 ounces of liquid and measures about 3.75 x 3.5 inches. Design taken from an original watercolor and repeated on the back, with interior rim decoration. Dishwasher and Microwave Safe.