Ok but not the best I purchased this cup for my niece and it's pretty ok. The major issue that I had with it was she is still often a tipper and when it is tipped the slightest they don't get anything out of it.

So far I loved it! This was my son's first sippy cup that I bought for him, what made me try it out was that the straw wasn't plastic so it wouldn't poke him hard inside the mouth and that the lid covers the straw when it wasn't in use, my son didn't have trouble with that at all but if the lid happens to break off, whatever liquid you have in the cup will slowly go up the straw and leak.

Another option for sippy to cup training We were having a very difficult time trying to move our daughter from a bottle to a sippy cup. She had a hard time drinking from the sippy while sitting because she could not lean her head back far enough to get the water to come to the spout. Our only success was with a straw, but that was an awful mess when she tried to hold the cup herself. The Munchkin Click Lock Weighted Flexi Straw Trainer Cup is the perfect solution. The weighted end of the straw ensure that it follows the liquid in the cup even if tilted at an odd angle. The straw click lock lid and the spout in the straw make this cup spill proof and the flexible straw ensures that baby can not gouge herself with the straw if she fall or misses her mouth. I tried several different types and brands of sippy cups, but overall this is the best trainer cup I've found.