I couldn't be more satisfied. My baby has always had a habit of taking in too much air while she feeds and it would always cause her to have an uspet stomach but at the same time not full of her milk. So at the end of each feeding I was always left with a very cranky child. Since I purchased thus bottle I have seen and extremely satisfied baby as well as a satisfied mommy! I highly recommend!
Over all we would recommend this product in a heart beat, after using these for 9 months, this is the pros and cons list we've come up with so far. Our daughter has always been prone to gas easy for multiple reasons, this was the only bottle that aided in the prevention of gas and colic the best. We noticed a difference immediately.
The bottle is okay. Cleaning them can be a bit cumbersome since there are so many parts. The nipple of the bottles are narrower than the Medela brand so it is harder for the baby to transition from breast to bottle. It also leaks.