Just received 2 of these tumblers and they are very nice, good quality! The ones I received are a greyish white inside (not black as indicated in the picture). They are ceramic with maybe some other material mixed in, maybe glass - really not sure. But they have a good feel to them, not too heavy and not too light! The only con is the top opening is not wide enough to hold a standard size tube of toothpaste.

Great

Great looking

Very nice!