Baby Bottle Thread Changer, Baby Bottle Converter Allow Spectra S1 S2 Pumps' Wide Mouth Flanges to Use Medela Bottles
★ 4.5 (315 Amazon ratings)$6.55
See it on Amazon →The verdict
This adapter successfully lets Spectra pump users fill Medela and standard-neck bottles directly, saving money and reducing waste, though some users report minor issues with tightness and increased pump noise.
What parents love
- • converts spectra pump to medela bottles
- • pumps directly into feeding bottles
- • cheaper than buying new bottles
- • takes up less storage space
- • threads on securely
Worth knowing
- • makes pumping slightly louder
- • adapter can feel loose on some pumps
- • bottle may unscrew during heavy pumping
Specs
| Bpa Free | yes |
| Material | Polypropylene |
| Quantity | 4 |
| Weight Oz | 1.76 |
| Dishwasher Safe | yes |
| Compatible Bottles | Medela, Ameda standard-sized |
| Compatible Pump Flanges | Spectra S1/S2 |
How we read it: distilled from 315 Amazon reviews, last checked July 24, 2026. We carry no affiliate links and no brand pays to be featured — here's how we work.
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