Solid double walled glass.
Discussion
It’s not solid; there’s air between the walls 🤓. Just kidding! 😂
That's true. I've broken a few them. Delicate but elegant. Heat/cold retention is great, too.
Yes, I’ve broken a couple of them already, but I love them. I have so many regular coffee mugs collecting dust; I should donate them to live up to my minimalist lifestyle.
I've been trialing these in my household, both the 16oz and 20oz, to great success so far.
They are made of a tempered borosilicate that is much studied than double walled glasses, still has great heat retention (due to handle), but also is dishwasher/microwave safe, and does well with hot and cold liquids.
Haven't broke one yet and we're musing them hard.
Interesting. Never heard of borosilicate glass. Dishwasher and microwave safe sounds good 🤙