The Short And Wide Porcelain Travel Mug With Cork Bottom looks just like a standard coffee cup, except it has a travel lid and a cork bottom.
The lid helps prevent spills and keeps in heat, while the cork ensures the cup does not slip. It also gives it a large diameter at the base (and the cup is the same diameter elsewhere), which makes it difficult to tip over.
This is a great cup to take on a trip. When sitting on a tray table like it might in a bus, train or plane, it does not slip easily and will not tip over. But if you’re in your own car, it may not be ideal. That is because it is not made to fit into a cup holder.
I really like the idea of adding cork to the bottom of this cup. In addition to the benefits mentioned above, it also acts like a built-in coaster, protecting the surface beneath from stains.
Also featured here: https://roadmugs.com/wide-bottom-ceramic-travel-mug.