I just received a large Robert's Feats of Clay scuttle. WOW! It's big! I've Been using a big soup mug/bowl, and this is about 1/2" wider at the mouth but it slopes into the center faster then my soup bowl so it's about the same size. But the outside bowl is round and swells out so that water gets around the inner bowl to keep the lather warm. It should hold about 4 cups of hot water, but I haven't given it a test drive yet. I'll do that this weekend. I'll try to get some pictures up once I've used it and report back. I think it will be just great, and for $35 shipped you just can't beat it.