Maymom Backflow Adapter for Spectra S1, Spectra S2, Spectra 9, 9Plus Pump; Spectra Adapter to Use Medela Flanges and Bottles Review July 25, 2018 MarblePiglet No Comments Breast Pumps Six pieces of adapters to allow your Spectra S1, Spectra S2, Spectra M1, Spectra 9 pump to use Medela and Maymom Flanges Using the adatper and a backflow protector can maintain a closed System for your spectra pumps › See more product details More Post navigation ← Evenflo Feeding Replacement Parts Breastfeeding Kit for Hospital Strength Advanced Double Electric Breast Pump ReviewJolik Baby Bottle Converter for Spectra S1 S2 Avent Pump Wide Mouth Flanges to Use Medela Ameda Dr.Brown Lifefactory Standard Baby Bottles Size, Pack of 4 Review →