 The big top is heated where you can plug it up to 110 volts electricity and keep the top warm, like if you want to keep somebody's food warm. It's got a switch on the side where you turn it off and on. It's got rollers on it, and it has locks on the two rollers where once you park that table somewhere, you can keep it still. But it would probably cost $500, $600, that table. I gave $150 for it. If somebody wants it for that, they can have it for that. And I've got a table, so I've got two of them. I don't use both of them.