Medela PersonalFit Flex Replacement Membranes, 2-Pack, Compatible with Pump in Style MaxFlow, Swing Maxi and Freestyle Flex Breast Pumps, Authentic Medela Spare Parts,2 Count (Pack of 1)

Tried a cheaper off-brand and it didn't work despite multiple ways of manipulating it trying to get it to work. Got these and they work right from the start. Definitely work the money if you don't want your supply to dwindle.

Work great with my pump

First time exclusively pumping and I didn’t know you have to change the membrane. I saw a decrease of my supply but when I bought this membrane my supply came back up. Great product but you have to change every 2 months!

I tried buying the off brand membranes to help save afew bucks. (Seeing as they recommend replacing them every 3 months) The generic ones did not work, I tried many different brands but the medela ones are the only ones that maintained proper suction. Definitely worth the price!

Works exactly as expected, would buy again.

Exactly like the ones that came in my pump!

Very easy to use but they will eventually warp with the constant use.

Work great but wish you could use HSA/FSA dollars to purchase