You can take foods directly from the freezer or refrigerator right to the microwave for fast and easy reheating with this popular microwave-ready Mug. It has a vented silicone valve that's virtually liquid-tight. This easy to open & close silicone valve also lets steam escape more rapidly when reheating and can be easily detached for cleaning. Perfect for leftovers or a meal on-the-go with a 2 cup capacity. They come in these new Peacock and Meadow colors. Dishwasher safe.