Our Fat Belly mugs are curvaceous and casual. The tulip-shaped design actually enhances your coffee or tea drinking experience by trapping and concentrating the aroma-filled steam in the bowl of the mug, then funneling it up slowly to your senses. If you have time to linger with a cup of Joe, this is your mug. No two mugs are exactly alike; but the drinking capacity of each is approximately 1 1/3 cups. Mugs are microwave and dishwasher safe.