My daughter loved it from 12 months on. Definitely non spill once you have it done up properly and easy to get water out of. Two things that should be common to all of these kinds of things but are actually hard to find.
Not the best cup - The cup does not close completely no matter how tightly you screw the lid on. My one year old was able to open it and spill water everywhere.
It is ok to use under supervision but I will look for another option.