I ordered this as I thought it looked cool and might be better than a bowl filled with water. It folds up and it disappears when I store it. Well, it collapses down to about a centimeter thick. When filled with water, it doesn’t sag down. When I put it on my side table it is perfectly square when filled with water. Dip, scrub, dip, scrub, my Blackstone is clean. I’m impressed. It exceeded my expectations.