Medela Spare Breast Pump Membranes, Compatible with Medela Pump in Style Advanced, Swing, and Harmony, 6-Pack

Makes such a difference to have a new membrane for pumping the suction greatly improves. If your membrane doesn't lay flap when on the side it's fine for a change. Easy to change, pops in and out. Medela is always my go to brand for breastfeeding products

These membranes are okay, but I have found, more often than not, that the membranes become stuck which results in an overflow of milk and a mess. I utilized these as I could not find a replacement. I actually preferred other brands' membranes than Medela membranes, which is surprising because I preferred Medela's breast pumps to other brands.

You really only have to replace them monthly. Cons is that they tear easily and sometimes its hard to catch. I wouldn't improve it in anyways because it's good for the flow of breast pumping. And this is my first kid so I dont know if I really had any expectations, I just thought if I needed it, then great. I will for sure buy it again! Need to keep up with the sanitation and quality of the breast pumps!

Went bad easily. I purchased them far too often. They were necessary for my pump and I hated that I had to constantly buy new ones. I would've liked something more long lasting to save money. Overall, they worked.

These are a bit pricey for such a small piece and they do not seem to last very long if you pump frequently at work. I have it 3 stars Bc it's a necessity. However the price is a bit much and the packaging makes it easy to misplace them.