Bottle Compatibility
Have you wonder which Medela breast pumps parts 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!
| Model | Pump Part | Connection to | Adapter Needed |
| PISA, Swing (Single-side) | Medela PersonalFit Bottle Connector | Medela Bottle | None needed |
| Medela PersonalFit Bottle Connector | Spectra Bottle | Yes, this one | |
| Medela PersonalFit Bottle Connector | Avent Bottle | Yes, this one | |
| Medela PersonalFit Bottle Connector | Standard mouth Dr. Brown Bottle | None needed | |
| Medela PersonalFit Bottle Connector | Tommee Tippee Bottle | Yes, this one | |
| Medela PersonalFit Bottle Connector | Standard mouth Pigeon bottle | None needed | |
| Medela PersonalFit Bottle Connector | Wide mouth Pigeon bottle | Not compatible | |
|
Classic Freestyle, Swing-Maxi |
Medela Freestyle Spare parts kit | Medela Bottle | None needed |
| Medela Freestyle Spare parts kit | Spectra Bottle | Yes, this one | |
| Medela Freestyle Spare parts kit | Avent Bottle | Yes, this one | |
| Medela Freestyle Spare parts kit | Tommee Tippee Bottle | Yes, this one | |
| Sonata | Medela Sonata spare parts kit | Medela Bottle | None needed |
| Medela Sonata spare parts kit | Spectra Bottle | Yes, this one | |
| Medela Sonata spare parts kit | Avent Bottle | Yes, this one | |
| Medela Sonata spare parts kit | Standard mouth Pigeon bottle | None needed | |
| Medela Sonata spare parts kit | Wide mouth Pigeon bottle | Not compatible | |
| Swing-Maxi Flex, Freestyle Flex | Medela PersonalFit Flex Connector | Medela Bottle | None needed |
| Medela PersonalFit Flex Connector | Standard mouth Dr. Brown Bottle | None needed | |
| Medela PersonalFit Flex Connector | Spectra Bottle | Yes, this one | |
| Medela PersonalFit Flex Connector | Avent Bottle | Yes, this one | |
| Medela PersonalFit Flex Connector | Standard mouth Pigeon bottle | None needed | |
| Medela PersonalFit Flex Connector | Wide mouth Pigeon bottle | Not compatible | |
| Maymom | One-piece flange - standard neck | Medela Bottle | None needed |
| One-piece flange - standard neck | Spectra Bottle | Yes, this one | |
| One-piece flange - standard neck | Avent Bottle | Yes, this one | |
| One-piece flange - standard neck | Tommee Tippee Bottle | Yes, this one | |
| One-piece flange - standard neck | Standard mouth Pigeon bottle | None needed | |
| One-piece flange - standard neck | Wide mouth Pigeon bottle | Not compatible | |
| Narrow Neck Base Connector for Medela | Medela bottle | None needed | |
| Narrow Neck Base Connector for Medela | Spectra Bottle | Yes, this one | |
| Narrow Neck Base Connector for Medela | Avent Bottle | Yes, this one | |
| Narrow Neck Base Connector for Medela | Tommee Tippee Bottle | Yes, this one | |
| Narrow Neck Base Connector for Medela | Standard mouth Pigeon bottle | None needed | |
| Narrow Neck Base Connector for Medela | Wide mouth Pigeon bottle | Not compatible |