Very nice, large mug. I'm very happy with it. It would've gotten 5 stars if the straw wasn't made of glass. Kind of stupid if you ask me seeing that the straw will move around and hit against the glass cup, which feels very fragile. It should've been the same material (some kind of plastic?) as the lid. Otherwise I like it. I won't be able to take it outside the house because I'm pretty positive it's not borosilicate glass. Which is also very disappointing because steeped tea is very hot, and when a 'tea mug' says don't put hot liquid in it, you know its not high quality. But besides that, I'm ok with not brewing my tea in the mug, I'll just use it for iced.