This product is easy to clean and very durable. Ran twice through the dishwasher and had no problems. The seal on the lid is solid so water is not trapped in crevasses, and is also easy to remove and put back on if water should get between seal and lid. Heated in microwave for 1:45 minutes and glass (portions not in contact with food) remained cool enough to touch. I also love that it is thick, durable glass instead of plastic as this makes it much more versatile. I am very pleased with this product and will definitely be purchasing more.