I was looking for a more attractive cup a sippy cup for my daughter 15 months. She did not drink much water and would not drink if I asked him. So, rather than block it by forcing, I took the cup. I ask him every morning on the living room coffee table for her to drink when she wants. Its bright color (I received it in green), its practical form (for small) and straw are very attractive to her. For she misses she takes, drinks a little and rest. No need to ask. It is also very convenient to carry with the small latch that comes bent straw. No leakage. My daughter knew drinking straw so I have no worries about that. But I still tested before giving it, and it has nothing to do with straws "great." The opening of the straw is the same as the variable flow teats (it's a slot) so no need to know to drink straw because the suction will be the same as with a bottle.