This bottle is a great idea but it didn't work for us. My baby has been breastfed almost exclusively and we tried the breastflow bottle in our search for a bottle that he could eat from efficiently.  It would take him 50 min to take in 4 ounces with this bottle where it would take him 10-15 min to breastfeed. So, I don't think it can be that much like breastfeeding.  As a side note, we did end up finding another type of bottle that he was able to empty much faster (Gerber Nuk).  Also, this bottle is more of a pain to clean than other bottles because of the extra part.  Finally, it came with...