[sbaglio]

Thanks for this message - I had no idea you could exchange these bottles. We used Born Free bottles for about a week, and saw a major increase in gassiness and crying in DD. The venting mechanism is all sorts of suspect, and you could literally see the air bubbles heading into her mouth as she drank.

We switched back to Dr. Brown's (plastic, with BPA) while looking for glass/BPA-free wide neck bottles. Turns out the company doesn't make the wide neck bottles. We may end up using the standard Dr. Brown's bottles. Needless to say, these were a lifesaver for us. They really do work.