Search  for anything...

Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps, Flange Sizing Kit Silicone Flanges Insert, Breastfeeding Essentials Kit for New Moms

  • Based on 1,514 reviews
Condition: New
Checking for the best price...
$9.99 Why this price?
Save $18.99 was $28.98

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 90-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon

Arrives Saturday, May 23
Order within 11 hours and 18 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields


Features

  • Essential for New Moms: Flange inserts offer crucial comfort and support, adjustable to nipple size for a more effective and comfortable breastfeeding experience, reducing discomfort and promoting breast health
  • Customized Comfort: Experience ultimate comfort with our flange sizing kit featuring multiple size options (13mm, 15mm, 17mm, 19mm, 21mm). Find the fit for your unique needs and enjoy a cozy pumping experience
  • Compatibility and Versatility: These breast pump flange size kits are designed to seamlessly integrate with various 24mm wearable breast pumps. Their extensive compatibility saves time and effort
  • Safe and Gentle: Crafted from food-grade silicone, our flange inserts are BPA-free, ensuring the safety of both you and your baby. The soft-touch material provides a snug fit, promoting efficient pumping without causing irritation or discomfort
  • Easy to Clean and Durable: Made for busy breastfeeding mothers, these silicone flange inserts are easy to clean and maintain. They can be sanitized with boiling water, ensuring that the pump accessories remain hygienic and durable

Product Dimensions ‏ : ‎ 1 x 1 x 1 inches; 4.23 ounces


Item model number ‏ : ‎ FL-001


Date First Available ‏ : ‎ November 30, 2023


Manufacturer ‏ : ‎ Nursi Luna


Best Sellers Rank: #666 in Baby (See Top 100 in Baby) #4 in Electric Breast Pumps


#4 in Electric Breast Pumps:


Customer Reviews: 4.6 4.6 out of 5 stars (1,905)


Brand Name: Nursi Luna


Included Components: 13mm Flange Inserts * 2PCS, 15mm Flange Inserts * 2PCS, 17mm Flange Inserts * 2PCS, 19mm Flange Inserts * 2PCS, 21mm Flange Inserts * 2PCS


Number of Items: 1


Manufacturer: Nursi Luna


Model Number: FL-001


Manufacturer Part Number: FL-001


Unit Count: 1.0 Count


Operation Mode: Manual


Additional Features: Lightweight


Item Weight: 0.12 Kilograms


Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields


Material Type: Silicone


Is the item dishwasher safe?: Yes


Color: Transparent


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 23

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Very comfortable and useful .
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
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 .
Reviewed in the United States on March 20, 2026 by Yudeisi Alonso

  • ⭐️⭐️⭐️⭐️⭐️ Simple & Helpful
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
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!
Reviewed in the United States on January 4, 2026 by Melissa Infante

  • No more pumping pain!
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
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! ... show more
Reviewed in the United States on October 17, 2025 by Ashley

  • Good starter pack
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
Sizing tool was super useful and the flanges fit the 24mm spectra flange perfectly. Some were a little tight but not impossible.
Reviewed in the United States on April 24, 2026 by Fleur A

  • Great unless you need half sizes
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
Straightforward, compatible with my Dr. Brown Customflow pump. Great for if you need a different size on each side! Soft silicone works well with elastic tissue and is pretty comfortable. Size guide is very helpful. Milk sometimes gets trapped between flange and inserts so make sure to lean forward when removing pump and give the flange a good squeeze, or spin the inserts to release milk in and not out! ... show more
Reviewed in the United States on July 22, 2025 by Sylvester

  • Super durable and helpful
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
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.
Reviewed in the United States on March 11, 2026 by Sierra Z

  • Perfect
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
Nursi Luna Flange Inserts 10PCS – Super helpful for new moms! Functional, durable, and easy to clean, with multiple sizes to fit different pumps. Great value for breastfeeding essentials.
Reviewed in the United States on December 27, 2025 by Shelby

  • Perfect
Size: 10 PCS 13/15/17/19/21 mm for 24 mm shields
Fit perfectly into my Medela hand pumps flange, and the sizing tool + brush included are super convenient.
Reviewed in the United States on April 28, 2026 by Rayven

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...