So I’ve had 3 different ember mugs. The first travel mug the ceramic mug 2 and the travel mug 2. I love my mugs don’t get me wrong they keep my coffee at the perfect temperature for the 3 hours the battery last. The problem is the top of the travel mug breaks easily. I’ve had it less then a year now and it will no longer stay open. which wasn’t too bad because they used to sell the tops for them. Just buy a new top, problem solved. That is no longer the case they only sell the open lid halo tops. I’m a trucker and having that open top is just asking to have coffee all over my truck. I do not recommend this cup anymore.