1 of 2 people found the following review helpful
I bought the tetris mug, and it was OK. I then HAND washed it, and suddenly all the white lines were a complete mess. half the tetris board had folded over, you now couldn't read the word 'level' the border was broken in several places and nothing was legible.
It didn't even heat change anymore.
So unless you use it for the same drink and simply won't wash it, this mug might as well be a black mug that your sister has scribbled white chalk on.