Born Free 9-Ounce Wide Neck BornFree Bottles Twin Pack

We got all different kinds of BPA free bottles for our 6 months baby.
and got this expensive one with fancy design venting system to give our baby a comfort and happy meal...

it turns out... It is the worst design EVER !!...
as a fluid dynamic expert, I didn't see any point to make three pieces assembly to create tiny venting system. (the only reason I can think of ... is marketing purpose....)

to be more specific, after assembly, it create a small groove channel for air to come in while baby is sucking milk, however, you need to be very very careful to make sure all parts are absolutely "DRY" while assembly, otherwise, the water will be trapped in the venting groove channel, and capillary force will hold it and seal the whole bottle...

I actually tried to suck the bottle with "wet" assembly... and need to try really really hard to fight the capillary force to get the water out and clear the vent. (you will learn how much your baby is suffering... ><)

besides that, when you put the cap on, you cannot tight it too much... otherwise it will seal even in dry condition.... and not to mention when you need to shake your milk after heating up, or mixing formula... basically everything you do could cause problem....

they shouldn't design such complicated thing to make our baby and parents suffer...

if you ever consider this bottle... I strongly recommend to try something else better and cheaper...

-Sean Lin, Ph.D.

My son who is mostly breast fed likes the bottle. No problems using it. I wish the nipple were more like the breastflow bottle, but he just puts his lips around the very top of the nipple which is wider. Of course we love that it is BPA free. It does have a lot of parts to clean and keep track of.

We tried several types of bottles (Avent, Dr. Browns, Gerber) and these are the ones that worked the best. No leaks like other brands. Easy to assemble. My daughter loves these. They are a little pricier but well worth it.

We've used Avent before and like these better. Nipple collapse rarely occurs because of the special vent. We tested it by taking the vent out and the nipple collapsed much more often. The glass is nice because you can microwave water in the bottle, plus, I don't trust plastic even without the BPA.

These bottles are great. I purchased them because they are BPA free. I have also used Medela, Advent, and Dr. Browns. The Born Free are by far the best. The wide neck makes adding formula easy. I haven't had any problems with leaking or a collapsed nipple as other posts mention. In fact, I am able to shake them to mix the formula w/o any spilling which I have found is impossible with the Dr. Brown bottles. My son seems to prefer the nipple shape of the Born free to the other brands as well and is less gassy than when we use the Medela or Advent. I am very satisfied. The only downside is currently the company is out of stock on their venting system so you only get one venting system per three pack of bottles and have to redeem a free coupon to get the other two vents. I had a bunch from the smaller 5 oz bottles I bought so I was able to use those with the new 9 oz bottles I purchased until I get the new ones. I highly recommend these bottles.