“I love it so much! When I used it for the first time, the nurse accidentally bumped it, and it fell into a sink. She complimented my tumbler because she was so afraid that it would leak but it didn't. Luckily, there were no dents and chips after that fall.”
“The seal is so tight I cannot open this without causing pain in my hands and wrist. This is a defect because the black one I purchased at the same time open and closes perfectly!”