I purchased six double-walled steel cups three years ago, and I’ve never gone back to drinking things in ceramics or glass. Here’s why.
- Even when my beverage is really hot, the cup’s insulating layer of air between its outer and inner steel wall makes things pleasant warm to hold on the outside.
- The same design keeps the beverage inside hotter for longer. This is good if you’re a slow drinker, the kind who likes to sip and enjoy your beverage while working or relaxing.
- For cold beverages such as cold coffee, the cold metal inner wall feel pleasant to the tongue.
- A steel cup is child-proof. Adult-proof too.
- No leaking liquids from the bottom of the cup, as is the case of ceramics. Avoid table and cloth stains by design.
- It’s not gimmicky or at least not over-engineered like the active temperature control mugs. It just works passively on the reliable laws of physics.
Aside: In August 2022, I stumbled upon a glass equivalent.
I dislike ceramics and glass because they’re fragile and thermally terrible. I don’t care that they look pretty. But this one could be a good middle ground for those who don’t find the look and feel of steel aesthetically appealing.