These are large white ceramic mugs that we had manufactured years ago. I just have a few left over from art shows that we took them to over the years. I have one of each design left and that's it. They are supposed to be dishwasher and microwave safe, but personally I handwash mine just to make sure the art will last a long time. These are bigger than the standard mug, but I am not sure exactly how many ounces they are supposed to hold. Each mug is packed in a box inside of a box to try and get them to you in one piece.