I bought new Yeti 6oz (blue) and 4oz (maroon) cups (they come in sets of two). Ceramic on the inside with metal body.

#coffeechain needs. https://i.nostr.build/FwXUnQBDob9H69UV.jpg  

 agree: must-have
 https://image.nostr.build/144c00dacd4c7ca077f2c1d050ad7df86403d05d3e0084e1fb7bfa1585a5fdc8.jpg

...wait, ceramic? "Dear Santa..." 

 yes!! they have an amazing finish!