Dr. Brown's Original Wide-Neck Replacemnet Travel Caps, 2-Pack, White (680-P2)
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Questions & Answers
It's impossible for me to know for certain. These Dr Browns did not look like glasses, even though they had a wide neck. Hope that helps. By the way, if the glass wide neck has the same girth as the plastic wide neck, everything should work.
I use Dr. I am not sure if it is safe. The color brown.
It does not seem like you will get six but I suppose you will