MAM 3 Pack of 5 oz. bottles

My exclusively breastfed daughter absolutely refused nearly any bottle we offered her when I was going back to work. We were in a near panic when someone finally recommended these. She took to them like a charm! When I watched her feed with one of these, it really did seem like her sucking action was the same as when she nursed. The Ulti-vent allows the milk to flow constantly without the nipple collapsing, which was my daughters biggest problem with the Breastflow bottle (the only other one she didn't outright refuse). My only complaint is that there are alot of pieces (the bottom's come off) but that really just makes them easier to clean. It did confuse the grandparents though.