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👩🍼 Find your perfect fit, pump with confidence!
The Nursi Luna Flange Sizing Kit offers 10 BPA-free silicone inserts in five sizes (13-21mm) plus a nipple ruler, enabling breastfeeding moms to customize their pump flange for maximum comfort and efficiency. Lightweight and easy to clean, this kit supports healthy milk flow and reduces discomfort, making it an essential tool for both new and experienced moms.













| ASIN | B0FPKJ3371 |
| ASIN | B0FPKJ3371 |
| Additional Features | Lightweight |
| Best Sellers Rank | #851 in Baby ( See Top 100 in Baby ) #137 in Breast Shells & Nipple Therapy Products |
| Brand Name | Nursi Luna |
| Color | Transparent |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,808) |
| Date First Available | October 13, 2025 |
| Included Components | 13/15/17/19/21mm Flange Inserts * 2PCS |
| Item model number | FLANGEKIT |
| Manufacturer | Nursi Luna |
| Manufacturer | Nursi Luna |
| Manufacturer Part Number | FLANGEKIT |
| Material Type | Silicone |
| Model Number | FLANGEKIT |
| Number of Items | 1 |
| Product Dimensions | 2.44 x 3.46 x 4.09 inches; 5.93 ounces |
| Size | 4 in 1 kit with 10PCS 13/15/17/19/21mm |
M**E
⭐️⭐️⭐️⭐️⭐️ Simple & Helpful
The Nursi Luna Flange Inserts (10PCS) work great and fit perfectly. They’re soft, comfortable, and helped improve suction while pumping. Easy to use, easy to clean, and very helpful for getting the right flange size. Great value for the price—definitely recommend!
Y**O
Very comfortable and useful .
Very good product . I liked that it comes with different sizes , so I was able to find the one that fits best and makes using the pump much more comfortable . The material is soft and easy to clean . It works well and I recommend it .
A**Y
No more pumping pain!
Great quality! It came with directions for sizing that were easy to follow and helped me find my fit. The inserts are easy to clean and put in and take out of my pump. I’ve always despised pumping because it was uncomfortable and made me sore afterwards. I was using the 24mm flange that came with my pump until a lactation specialist suggested these. Turns out I needed a much smaller size flange. Finding the right size helped with pumping pain and increased my milk output! If this honest review helped make your decision, please mark it helpful!
S**Z
Super durable and helpful
These are perfect! I’ve been pumping for 6 months now and let me say, the size chart saved me so much pain! I love that it has other sizes too so you can try to see what works best! Fits all my pumps and super durable.
D**R
Essential for Comfortable Pumping
I purchased the Nursi Luna Flange Inserts to find the right fit for my breast pump, and they have been incredibly helpful. The kit includes 10 silicone inserts in sizes 13mm, 15mm, 17mm, 19mm, and 21mm, making it easy to determine the best size for comfort and efficiency. The soft silicone material is gentle on the skin, and the inserts are compatible with most 24mm flanges, such as those from Spectra and Momcozy pumps. The included nipple ruler and cleaning brush are thoughtful additions that enhance the overall value of the kit. Many users have reported improved comfort and milk output after using these inserts, as they help achieve a better seal and reduce discomfort during pumping sessions. However, some users have noted that the smallest size, 13mm, may still be too large for those with smaller nipples. Additionally, while the inserts are dishwasher safe, some users have mentioned that the markings on the sides can be difficult to read over time. Despite these minor drawbacks, the overall quality and functionality make this kit a worthwhile investment for breastfeeding mothers seeking a more comfortable pumping experience.
1**E
Great material and snug fit
Works really well and the material is strong and sturdy. Fits my 24mm standard flanges snuggly. Would recommend.
S**R
Good product
Works great
M**.
Perfect
Great measuring tool. Flange inserts work well!! Glad I could have the right size flanges. Great price!!!!
N**D
Conforme à la demande
T**.
Effective and comfortable to use
E**O
Funciona muy bien y se pueden esterilizar con el esterilizador de microondas
K**.
These are so great to figure out your flange size!! Pumping hurt so bad until I used these. They seem sturdy and go into my Mandela hand pump with ease.
L**Z
Super suabes y vienen de varios tamaños. Tambien viene con un medidor que te ayuda a verificar cual es tu talla de embudo.
Trustpilot
3 weeks ago
2 months ago