When I think of Rubbermaid I ha e always thought the products was plastic so when I received this gorgeous dish free as a complimentary in return for my honest review I was amazed at the fact that it's more of an glass dish. It's very light weight and the lid fits perfectly. It is dishwasher safe. I have already highly recommended it to my daughters and friends. Ican't wait to bring this dish out at my next event I would most likely put a salad or a casarole in the dish.