I love these bowls I need to get new ones for my dog and I found these at the store they have a black rubber grip at the bottom which you take out when you put in the dishwasher to wash , but I sometimes like to wash them by hand also which I do not take the black rubber strip off then. That strip makes them stay on the ground my dog loves them she had ones that were easy to break before I can't remember what the we're made of I want to say clay bit that's not what I am thinking but that's all that is coming to mind right now.. but I know other dog owners will know what kind of dog bowls she had before. So I would totally recommend I got same size for food and water and I give same amount of food as I gave before . It is a home run with my dog! I'm sure it would be with yours to!