Love love love my glass coffee cup. A co-worker had one that I fell in love with, just couldn’t justify buying another coffee cup since I had a perfectly good one. After 3 years, I finally splurged and bought one. My other one is 10 years old and still in rotation. I love that it has a glass lid with the glass cup. It feels very sturdy, unlike other glass mugs. No issues drinking thru the glass lid. No leaking from the lid/cup gasket. I use it for both hot and cold drinks. Overall, very happy I finally got one 🙂 (Would love a RED gasket if new colors are in the works)