Love it!
I absolutely love my cup, I've had it for a number of months now and it has held up well during that time, despite daily use. My only issue with the cup itself is that they are surprisingly fragile - I accidentally knocked my first one over on carpet on the first day I had it and it cracked, which meant I needed to replace it. 🙃
My only other feedback is that the price point for these cups is quite steep, which may make them less accessible to people who want to make the switch from plastic but cannot justify spending $30 + on a reusable cup.