Cauldryn has made the swiss army knife of heated travel mugs
 

If you thought that the cutting edge of vacuum-insulated coffee mugs was to buy one in a color other than black, then boy have we got news for you. Cauldryn Coffee is showing off its modular coffee cup that promises to revolutionize the way we carry...

https://www.engadget.com/2018/01/09/...-mug-ces-2018/