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

I use these everyday, so I am not sure if I have used them too much and that's why they cracked, but the ones that came with my pump have been used longer and I have had no issues.Both Flanges have cracked where the neck meets the "drop" part. One is not all the way through, so I can still use it, the other one is all the way so it doens't work anymore.I'm giving it three stars because they do work as they should, but after 2 months of owning it they have already broken. Maybe I have used up it's life, but I wouldn't have expected it to break so quickly.