These chip very easily. If you wash them in the dishwasher they also retain moisture which left rings in my wood cabinets because we 'thought' they were dry when we put them away. We ended up throwing all four into the garbage can. Also, the description very accurately states that they may get hot when microwaved, and I can tell you that they REALLY retain heat. If I microwaved them, I had to wait at least five minutes before drinking, otherwise it was too hot against my mouth.