10PCS M5 Breast Pump Replacement Parts, 6pcs Silicone Duckbill Valve & 4pcs Silicone Diaphragm Compatible with Momcozy M5 Wearable Breastpump, Mom Cozy Breastfeeding Essential Accessories

I haven’t tried these yet because im still pregnant but i needed some for my breast pump! I’m really excited to have such a variety of different sizes

I got them to use with the Momcosy S12 because their 24 flanges are way too big for me. I tried all the sizes and only the 15 works best. I use a size 21 with my Medela pumps, but for some reason the 21 seems huge in this ones. Overall great product and good quality.

Good alternative to the name brand. They fit my mom cozy m5 and I didn’t notice and issues with leaking or output while using them. Would recommend.

These little parts tear so easily so it’s nice to have multiple on hand.

These are good quality, soft and flexible flange inserts that fits with a tight seal into an matching flange of my Spectra pump. Great value for money!

I don’t know if I’m doing something wrong. I can’t get these to sit right in my 24mm medela flanges. I messed with it for quite a while before giving up. Maybe I misunderstood the comparability. They do seem shorter and thinner than the last set I bought. I was also a little disappointed that these didn’t come with a measuring tool. It’s recommended to measure occasionally as size needs may change. I can’t comment on how well they work while pumping, but they don’t seem like a bad choice.

These inserts have worked perfectly with both my Elvie and Spectra pumps. They fit into the 24mm shields without any issues and stay put during use. I haven’t had any discomfort or skin irritation while using them, which is a big plus. They’re simple, effective, and do exactly what they’re supposed to.

Compared to purchasing the items from the company, this is a good value, especially if you only need these parts since these are the only small parts and only ones that break down over time and use. The duckbill valves fit snugly, the diaphragm is a bit more loose--it fits right, but it doesn't has as much friction as the original when you pull it off of the device. I'm unsure if this affects functionality as I don't pump often enough to compare it to what my normal output is. But it's great nevertheless to have these on hand if a part goes missing or breaks.