Lock&Lock also. They come in all shapes and sizes, I bring hot coffee, soups salads, rice meals to work and microwave them. As long as its not oily there wont be damage to the container. They don't drip or leak and I only had to replace the coffeecup after a year (almost daily use) because the rubber seal snapped. When used for food storage they also keep food fresh because of the airtight nature. I think they are available on amazon.