They’re easy to clean and sanitize. It cleans very easily! They're also better for long use or reuse later on.

We tend to put the lid on and shake it to test if the formula will come out (happens often). The caps fit nicely. The outer caps are so nice when shaking the bottles to mix the formula. I have to be mindful on how i cap it on and how much i turn it.

The little air flow technology on the cap/* really helps avoid gas/colic. The only thing is you don’t get to choose the * flow when you’re purchasing them.

A slow leak will always develop at the top of the * (not at the screw base) they leak from the * area as well as from where the plastic ring screws onto the glass bottle. One out of four bottles leaks around the neck.

They are advertised as thermal and shock proof. And it leaks bad. The worst part is that they only leak every 20th time or so that you use them, so it usually catches you off guard.

Dr brown is too narrow of a neck to pour formula in and plastic anyways, mam are also plastic and have way too many parts. Evenflo cause my baby to spit up so bad. Thes avent glass bottles have to be the worst bottles ever made.