







👩🍼 Pump in comfort, powered by precision.
The Momcozy 21mm flange insert is a BPA-free, food-grade silicone accessory compatible with most 24mm breast pump flanges. Lightweight and dishwasher safe, it ensures a comfortable, efficient pumping experience by reducing nipple swelling and fitting securely. Designed by moms for moms, this 4-piece set supports hassle-free maintenance and is highly rated for reliability and comfort.
















































| ASIN | B0CFR2ZLMK |
| Additional Features | BPA-Free & Safe: Made of food-grade silicone for safe milk contact., Easy Cleaning: Wash with warm soapy water and sanitize by boiling or steaming at 100°C (212°F)., Mom-Designed: Designed by moms for comfortable, hassle-free pumping., Proper Fit Matters: Choose the right size for comfort and efficient milk expression., Wide Compatibility: Fits most 24mm pump flanges with 19mm size options. |
| Best Sellers Rank | #34,506 in Baby ( See Top 100 in Baby ) #425 in Electric Breast Pumps |
| Brand | Momcozy |
| Brand Name | Momcozy |
| Color | Transparent |
| Customer Reviews | 4.4 out of 5 stars 428 Reviews |
| Included Components | Valve |
| Item Weight | 1.1 ounces |
| Manufacturer | Momcozy |
| Manufacturer Part Number | PJ |
| Material | Silicone |
| Material Type | Silicone |
| Material Type Free | BPA Free |
| Model Number | PJ |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Size | Flange Insert 21mm |
| Special Feature | BPA-Free & Safe: Made of food-grade silicone for safe milk contact., Easy Cleaning: Wash with warm soapy water and sanitize by boiling or steaming at 100°C (212°F)., Mom-Designed: Designed by moms for comfortable, hassle-free pumping., Proper Fit Matters: Choose the right size for comfort and efficient milk expression., Wide Compatibility: Fits most 24mm pump flanges with 19mm size options. Special Feature BPA-Free & Safe: Made of food-grade silicone for safe milk contact., Easy Cleaning: Wash with warm soapy water and sanitize by boiling or steaming at 100°C (212°F)., Mom-Designed: Designed by moms for comfortable, hassle-free pumping., Proper Fit Matters: Choose the right size for comfort and efficient milk expression., Wide Compatibility: Fits most 24mm pump flanges with 19mm size options. See more |
| UPC | 810123501472 |
| Unit Count | 1 Count |
S**A
Buy it if your size is 21 mm
Falange sizes super important especially if your looking for great milk out put. I used the bigger sizes if didn’t work until I measured and actually my size was 21 mm so I think I recommend you buy your correct Falange size. This fits my momcozy s12 pro and I also believe it’ll fit momcozy s9. These are also comfy when it’s your correct size. It won’t be as painful. I recommend.
M**L
A must for pumping
Made all the difference in the world. So much of breastfeeding is a new experience, I didn't know the difference the insert would make. My pump wasn't pulling any milk at first, but with the insert I had no problems. Easy to clean. Make sure to measure to get the correct size.
H**S
Worked like a charm
Compatible with the Momcozy S12 hands-free pump. Solved my painful pumping sessions and improved my milk output!
K**R
Buy these!
I've used these flanges every day for at least the last 6 months. They're still holding their shape and look like new. The plastic is soft and I dont even notice them in my spectra flanges. Have also used them in the new Willow handheld pump and they work good there as well.
E**R
Only able to be used with momcozy pump
Product helped and worked well with my mom cozy pump. I was disappointed to find that I couldn’t use it with any other pumps I have as usually flange inserts are interchangeable. I’m glad there are 4 inserts, they are very tiny and thinly made so back ups are necessary but they do what they need to do if you use the momcozy pump!
H**Y
Works with Spectra
They fit perfectly into the momcozy pumps since that’s what they were designed for. It also works with the spectra flanges. It’s quite fiddly to get them in since they’re not exactly the same size. You have to really smoosh and massage it in - but it does go in to the spectra flanges and works great once it’s in
A**R
21mm inserts
Tried using these in the spectra. It was tough to get them in but they did fit. Also, they ripped up the skin on my nipple. Maybe it works better with oil but too scared to try that now. Maybe they are the wrong size like other reviews say and that’s why it happened. I have no way of measuring. The material just isn’t as soft as it could be. I wouldn’t recommend.
T**S
Cited my wife great!
The pump that my wife had purchased did not come with her size. Being first time parents we thought it would be ok. Well we was wrong, it became painful and my wife milk production started slowing. She found these and they have been a life saver for her. The pain went away and she has been using the daily for the last month with no issues!
Trustpilot
2 months ago
1 month ago