I just love LUXEY cups. My first was a gift and I now have 3 and if I had more funds I would buy more. I make up water kefir and kombucha and I can being glass I can make up the 3 luxey cups at once and they are good to go. The sipper lid is perfect to allow for air so I don't have to "burp" it and it wont explode. However I guess I am just reviewing the glass replacement. I wish I didn't break the glass but accidents happen. I prefer glass and that's a sign of how much I use it. Wash and dry and put away straight away! Treasure your luxey. I also love my almond milk healthy mochas in this cup. It honestly makes my day everyday.