Leaks slightly at the top while you work--not a big deal. Black writing on outside (i.e. max fill line) came off in dishwasher Plastic plunger pieces shatter easily
This is a very simple, easy-to-use product which helped (along with my moka pot), serve as a nice introduction to homemade lattes. I was forewarned about the leaking lid phenomenon, and was pleased that it did not leak almost at all. However, the plastic on the plunger chipped off after about 20 uses, and on the 21st, the remaining plastic on the plunger shattered. Perhaps had I glued the original chipped piece back in place, the rest would not have shattered, but I was afraid of using glue on something that would touch the milk.
Great, though I have not approached them on replacement or refund.