Tupperware CrystalWave Soup Mug with Seal 16-ounce mug heats soup, sauces, and instant foods like noodles, oatmeal Use also for refrigerator food storage; virtually airtight seal preserves flavor Valve vents steam in microwave, while seal prevents splattering Dishwasher-safe; measures 6-5/8 inches in diameter, 3-1/8 inches high Lifetime warranty against chipping, cracking, breaking, peeling