To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I loved the tumbler the first time I used -really kept my coffee hot, but when I washed after that first use noticed cracks in the lid. The coffee I poured in was not overly hot so it really should not have cracked and I have not had this problem with other tumblers I have gotten. Sent back for a refund.
Keeps drinks hot! I actually tested the temperature of my water over time - pours it in boiling and THREE hours later, it was still over 100 degrees!
BUT, the lid cracked badly - practically crumbled - when I dropped my mug three days after I got it! Very poorly made lid. Had to throw it out. Makes the whole mug worthless - doesn’t stay hot... no longer spill resistant!