Over hyped for a crappy design.
Product works once you figure out the vent hole situation. New parent and these are most of the bottles we received from a baby shower. Everyone has said that these bottles are great and the best bottle. I have found only frustration with these bottles. You have to put them together exactly right with the vent hole or it won't work. I'm giving this 2 stars because it's a bottle I have to think and pay attention to at three am when I'm trying to make a bottle. Not cool and not very thoughtfully designed in my opinion. Getting rid of all our bottles to switch to MAM brand as they are more friendly with just trying to make a bottle.




