My baby does not arrive at all to drink this bottle. After testing it myself, it's true that it takes very hard to suck water out of the nipple. It is an unnecessary accessory for my baby (doubly useless because I had taken two, one for me, one for the nanny).
Too bad because there still has positive points: + Nuk the plug turns the bottle into the bag without leakage + Handles are very easy to handle for small + The pattern is pretty