Easy guide of bottle compatibility to your Wide Neck Flanges

Have you wonder which the Wide Neck Flanges from Maymom and Spectra will work with which baby bottles so that you can pump directly to the feeding bottle? 

The Medela, Ameda bottles are known as standard mouth bottles whereas the Avent, Spectra bottles in general are wide mouth bottles.

If your bottles are not listed here, here is a general guideline. Standard mouth (or narrow mouth) bottles are a little less than 1.5 inches when you measure across the diameter of the top of the bottle.Wide mouth bottles are a little less than 2 inches when you measure across the diameter of the top of the bottle.

Here's a chart to help you!