I've used these for about six months and am selling them because I have more now. The size is shown in the attached image. I don't have much knowledge about the material or the coating, so I can't make any guarantees. They are lightweight, easy to use, and can be stacked for storage. I hand-washed them and did not use a dishwasher. There is no damage or breakage, but there are stains or marks in a few places. I've shown them in the last three photos. Please consider these points before purchasing.