Review on Spectra S2 & S1 Breast Pump Replacement Kit - 27Mm Flange, Duckbill Valve, Backflow Protector Compatible W Nenesupply Parts. by Kyle Smithlin

There’s a reason these are half the price of the authentic parts. They look good but don’t work.I bought these to replace my parts for my Spectra as one is supposed to do occasionally. I was excited because everything looked the same, and they were new! But the back flow didn’t seem right. The flange also didn’t fit with my pumping bras the same so I kind of had to support the bottles a bit, which defeats the purpose of the pumping bra. I dropped from 5oz a session to 2oz. I was thinking something was wrong with me but then realized my breasts weren’t empty after a pumping session. It was the parts. The lost milk supply was a huge strain and I would not have gone through that false alarm if I had bought the authentic parts.