CafePress - Ohm's Law Large Mug - Coffee Mug, Large 15 oz. White Coffee Cup Made of durable white ceramic with an easy grip handle, this coffee mug has a hefty but classic feel. Measures 4.5" tall, 3.25" diameter, with 15 oz. capacity. Our coffee cup designs are professionally printed, so your unique design will look great and make someone smile with the funny, cute, vintage, or expressive artwork. Treat yourself, or make this coffee mug the perfect gift for Mother's Day, Father's Day, Valentine's Day, Christmas, birthdays, anniversaries, retirement, or for no reason at all! Microwave and dishwasher safe for easy use and convenient care. IMPORTED. We offer 100% money back guarantee, so you can buy with confidence. Your satisfaction is guaranteed, and returns/exchanges are made easy.