We got these bottles as a gift for our newborn. The bottle are the same as the original bottles which makes it easy to switch bottles. Love how the vent actually goes inside the bottle instead of on top like the old ones. Downside I found is the parts don't fit into the dishwasher basket like the old ones do.
I have the 4 and 8 ounce bottles. With my baby I only use glass and it has been great except that you will have to change out a few since they crack (or at least mine) cracked on the top of the bottle where you screw the top on. It only seems to happen on the 8 ounce bottles. I just thought it weird that they crack since they aren't cheap! Other than that they are great!!
We have bought Dr. Browns bottle for our child as this seems to be the one that's easier. The problem we have found is that the Straw vent as well as the vent attachment at the top has become black. Not for lack of washing and scrubbing that's for sure. I find this a huge problem as these bottle are not cheap and we can no longer use these pieces.
I have bought these bottle since my son was born, 1 year and a half ago, to now. I love these bottles in particular because it can be use with or without the vent system. The vent system is also great because I can change it as my son grows. It helped reduce feeding problems, and made it easier for my son to use bottle since it is similar to breastfeeding, thanks to the paces flow. And an awesome feature to it is that it fits my breast pump! It makes it 100 times easier for me while I pump. To top it off it's BPA-free. It's been the most wonderful bottle i have and will ever use for my little one!
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