I really like the idea of this cup - but if your kid likes to throw things, you may want to wait a little to use these. We used them for awhile, and they definitely survived several throws. But one chipped when our son lobbed it against a doorway corner (can't blame the cup for that break!) and another broke when he threw it in the hall (this, again, may be due to hitting a doorframe). Given how much my son loves to throw (he is obsessed with balls, after all), I have decided to wait until he can exercise more restraint on the throwing while drinking. Even so, I would buy them again when he is older (he is 17 months old now).