








👩🍼 Pump Perfectly, Feel Confident — Because Every Drop Counts!
The Nursi Luna Flange Sizing Kit offers 10 BPA-free silicone inserts in 5 sizes (13-21mm) designed by a certified lactation consultant to enhance comfort and efficiency for breastfeeding moms. Compatible with most 24mm breast pumps, it includes a nipple ruler and cleaning brush, making it an essential, hygienic, and customizable pumping solution for new mothers.






| Item Package Dimensions L x W x H | 4.21 x 4.06 x 3.27 inches |
| Package Weight | 0.14 Kilograms |
| Item Dimensions LxWxH | 1 x 1 x 1 inches |
| Brand Name | Nursi Luna |
| Color | Pink |
| Material | Silicone |
| Number of Items | 13 |
| Manufacturer | Nursi Luna |
| Part Number | FSK-FCS-01 |
| Included Components | 13/15/17/19/21mm Flange Inserts * 10PCS, Cleaning Brush * 1PCS, Nipple Ruler Pink * 1PCS |
E**E
Great Variety and Handy Extras
I was really impressed with these flanges! They came in a bunch of different sizes, which made it easy to find the perfect fit. I also appreciated that they included a measuring tool to help figure out which size I needed—super helpful for someone unsure where to start. Plus, the cleaning brush was a thoughtful addition and made cleanup simple. Overall, great quality and a very convenient set!
E**Y
Work well to find out your size. Great for the price.
These work great to get your correct size and pump efficiently, but not a permanent solution. I did use them daily at least 4 times a day for two weeks and then got the flange of the right size to replace these. I ended up using 3 different sizes in those 2 weeks, so these are great to use until you have your final size as your nipple might change sizes. They do work well but they did change color and became less firm the more we put them in the sterilizer. For what I wanted (to have something to use until my final size was conclusive) these worked well.
D**M
Every mom must have this!
Must have for any mom who is breastfeeding. So helpful to self size for the perfect flange fit. Love that it comes with multiple size adapters too. This was essential to my early postpartum days trying to figure out pumping.
L**E
Decent!
Love the sizing chart being silicon so it’s not as prone to rips or tears. Quality inserts with a wide variety. They aren’t the most comfortable, they tend to feel a little pinchy but I also don’t use any kind of nipple cream so that would be a must with these! Come with the cleaning brush which is super convenient
T**N
Helped with proper size
They work great, only thing is the 15mm doesn't fit very well in my flanges that are 21mm I believe. They fit, just stick out a little bit so I'm not sure if that affected suction from the pump at all. I was still able to use them and have great pump sessions, just be cautious as that may not be the case for every style flange with it sticking out like it was for me
J**R
Pumping game changer!
Absolutely changed the way I was pumping! If I could have put one thing on my registry for personal items, I would have added this. The flanges made such a huge difference in the way I was pumping. All the flanges are super soft and fit right into the breast pump. I personally used the spectra 2 and had no issues with it. It comes with a convenient little brush to clean them after use. The sizer that comes with it as well is easy to use to know what is the right size for you. Each baggie is also labeled as well so there’s no confusion which helped a lot and there’s many different sizes.
J**E
Works, but wears quick and doesn’t feel as nice as OEM
Works. But after using and cleaning after 3 uses. The rubber already hazed over and can be difficult to insert. Using the willow go pump.Can feel a difference when using the rubber insert vs correct size by manufacture.the rubber inserts aren’t as comfortable.
J**I
Wish I had this with baby #1
This is my sixth baby and somehow the first time I’ve ever measured myself for pumping. I really wish I had done it sooner. The sizing tool is super simple to use and gave me a clear answer on what I needed. The set itself feels like a great value, especially with all the extra inserts included. If you’re pumping and not sure about fit, just get this. It makes a big difference in comfort and output.
Trustpilot
1 day ago
2 days ago