Top 10 Best one fl in 2026

Last Updated - 6/12/2026

🏆Best Choice

Nuliie

Nuliie 10PCS Flange Sizing Kit 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps, Silicone Flanges Insert for Momcozy/Spectra Electric Breast Pumps, Pumping Essential Kit for Moms

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•[HIGH COMPATIBILITY] Nuliie flange sizing kit 13/15/17/19/21mm (10pcs) fit most 24mm electric and manual wearable breast pumps. It will reduce the 24mm shield nipple tunnel down to correct size. Note: Not compatible with 27-28mm shields.
•[MUST-HAVE ACCESSORY FOR BREAST PUMPS] Achieve enhanced breast pumping, reduce pumping time, and maximize milk production by using the essential flange inserts for your breast pump. The comfortable and soft silicone material is designed to stimulate milk flow and increase comfort during use. With the added benefits of reduced pain and increased milk output, our breast pump flange inserts are a must-have for any breastfeeding mother needing to pump milk.
•[SAFE & EASY TO CLEAN] Ensure safety and maximize the performance of your breast pump with our flange inserts. Made from food-grade liquid silicone and free from BPA, these inserts are easy to clean and dishwasher safe. We recommend washing the pump inserts promptly after each use and replacing them every 2 months to maintain optimal functionality. Plus, receive a complimentary cleaning brush for added convenience.
•[CARING SERVICE] With our silicone flange inserts, you receive a free nipple measurement ruler to help you choose the perfect size. Compare the size of your nipple before and after pumping to ensure the most comfortable and effective fit. We provide unparalleled after-sale for mothers by answering your questions anytime and anywhere.
•[FRIENDLY REMINDER] Nipple size can vary throughout different breastfeeding stages, requiring different sizes of flange inserts for your breast pump. If you're aware of your exact nipple size, we recommend purchasing the corresponding size directly. However, if you're unsure, we suggest starting with our 10-pack of Flange Inserts, which contains five different sizes to ensure you find the perfect fit.
•Your order may come with either the new or old packaging, shipped randomly. Rest assured, both versions guarantee the same high-quality product inside.

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$9.99

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Suniceme

Suniceme Flange Inserts 17mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 17 mm, 4PCS

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Suniceme flange inserts 17mm are breast pump accessories that fit most 24mm Shields/Flanges. It will reduce the 24-mm shield nipple tunnel down to 17 mm.
•Compatible with Momcozy/TSRETE/Medela/Spectra/Elvie/kmaier/Phanpy/Bellababy/NaNaLazy/KISSBOBO/Motif Luna/Ameda MYA wearable breast pump 24mm shields/flanges (Not for 27mm shields).
•BPA Free, made of food-grade silicone material, safe for mothers and babies. The Flange Inserts can be sanitized with water steam or boiling water. The pump parts can be cleaned with warm soapy water. It is recommended that you replace the parts every 1 to 2 months.
•Correct size flange inserts help moms pump more comfortably and efficiently. It is normal to feel your nipples swelling while pumping, so we suggest observing the appearance of the nipples during the milking process.
•If you do not have a good experience during pumping, Suniceme flange inserts for different nipple sizes would be a great solution for you.

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$8.99

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Suniceme

Flange Inserts 21mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 21 mm, 4PCS

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Suniceme flange inserts 21mm are breast pump accessories that fit most 24mm Shields/Flanges. It will reduce the 24-mm shield nipple tunnel down to 21 mm.
•Compatible with Momcozy/TSRETE/Medela/Spectra/Elvie/kmaier/Phanpy/Bellababy/NaNaLazy/KISSBOBO wearable breast pump 24mm shields/flanges (Not for 27mm shields).
•BPA Free, made of food-grade silicone material, safe for mothers and babies. The Flange Inserts can be sanitized with water steam or boiling water. The pump parts can be cleaned with warm soapy water. It is recommended that you replace the parts every 1 to 2 months.
•Correct size flange inserts help moms pump more comfortably and efficiently. It is normal to feel your nipples swelling while pumping, so we suggest observing the appearance of the nipples during the milking process.
•If you do not have a good experience during pumping, Suniceme flange inserts for different nipple sizes would be a great solution for you.

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$8.99

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Momcozy

Momcozy Flange Insert 17mm Compatible with 24mm Flange/Shield of Most Pumps, Insert for Breast Pump Replacement Accessories, 4PCS 17mm

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•The authentic Momcozy wearable breast pump 17mm flange insert accessories are suitable for use with 24mm Flange/Shield of Most Pumps. Momcozy Original Parts FSA/HSA eligible.
•Easy cleaning, wash Momcozy breast pump parts after each use with warm soapy water and rinse well. Please use boiling water/steam, with a temperature of around 100°C (212°F).
•BPA-free, made of food-grade silicone material. All Momcozy pump parts that come in contact with breast milk are BPA-free, giving you peace of mind about your baby's milk.
•Made for moms, by moms. We've committed our lives to providing the best breast pumps, accessories, education, and customer care that we can, supporting every mother with the beauty of parenthood. Meeting moms pump wherever without hassle needs.
•The size of the flange insert is significant for comfortable and efficient pumping. Some moms experience nipple swelling while expressing, so it is advisable to observe the appearance of the nipple during pumping. It is an unsuitable flange size and you need to replace the right size flange insert.

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$12.99

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Nursi Luna

Nursi Luna Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Flanges Insert Kit for 24mm Flange/Shield, Pumping Essentials Kit for Moms

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Essential for New Moms: Nursi Luna Flange Sizing Kit 3 in 1, developed by an IBCLC (International Board Certified Lactation Consultant), enhances comfort and pumping efficiency for new moms, addressing common confusion and discomfort during breastfeeding.
•Highly Compatible: 10Pcs Flange sizing kit come in a variety of sizes to choose from 13/15/17/19/21mm (2 flange inserts of each size) Fits most pumps with 24mm flanges/shields. Note: Not compatible with 27-28mm shields
•Getting The Right Flange Size: Nipple size can change during different breastfeeding stages, requiring adjustments for optimal comfort. Our nipple ruler based on IBCLC recommendations, provides precise sizing to ensure a perfect fit and efficient pumping
•Safe For Baby And Mom: Made from food-grade silicone, BPA-free, easy to clean, and dishwasher safe. Includes a sponge cleaning brush. Replace flange insert every 2 months for optimal performance
•Perfect Gift for New Moms: Our silicone flange inserts help mothers quickly and comfortably find the right size, ensuring a smooth pumping experience.

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$9.99

$14.99

-33%

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Nursi Luna

Nursi Luna 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

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•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

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$9.99

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Trymall

Flange Insert 13/15/17/18/19/20/21mm 14PCS,Compatible with Momcozy S12 pro/S9 pro/S12/S9/Medela/Spectra/Bellaaby/TSRETE etc 24mm Shields/Flanges,Reduce 24mm Tunnel Down to Other Size

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Compatibility: The Flange Inserts 14pcs are breast pump accessories that can be used with most 24mm Shields/Flanges.Compatible with any S9 pro/S12 pro/S9/S12TSRETE/Medela/Spectra/Opnmina/Elvie/Willow/Bellaaby/Motif Luna/Ameda/MOMMED/MYA/Ainsir/Phanpy/Lulia/NaNaLazy/Luxlady/kidzio/eulumap/Teexin/Fisroa/KISSBOBO/Goldeep/BIOBOO/Mumeasy/Nanawawa/TOVVILD etc 24mm flange/shield(Not for 27mm flange/shield)
•Usage:Trymall flange inserts sets contain two of each size (7 sizes in total), which can be used to find the correct size for your nipples. At least two flange inserts can be used simultaneously for work.
•Save: These replacement pump parts will save you the hassle of testing nipple size and selection. Many moms have nipples of varying sizes that can also change in size at different times. If your nipple size is less than 24mm, we have a suitable set for you.
•Safety:Made of transparent silicone material,our product is BPA-free you can use it with confidence.
•Wide Application: These breast pump accessories are only suitable for 24mm Shields/Flanges and cannot be used with other sizes of Shields/Flanges. Using coconut oil or nipple butter can reduce friction and make them easier to use.

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$9.99

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LOTBILL

Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Wearable Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Compatible with Most Breast Pumps: LOTBILL flange insert is suitable for most wearable breast pumps and 24mm breast pump flanges/shields(not for 27mm and 28mm shield), such as it is compatible with Momcozy S12 Pro/S9 Pro/S12/S9/S10/Medela/ Spectra/Willow/Elvie and other.
•The Importance of Choosing the Right Size: According to professional lactation consultants, a mother's nipple size may vary throughout the breastfeeding process. To save moms time and energy in finding the correct size, we offer an accurate and useful nipple measuring tool. Say goodbye to the pain and inefficient pumping caused by incorrect sizes.
•Care for Moms and Babies: Our flange sizing kit is made from food-grade silicone materials, free from BPA. They provide a soft texture that is gentle on delicate skin. The flange inserts fit closely with your skin, promoting efficient milk expression without any foreign body sensation. Additionally, they are reusable. It is very suitable for taking care of the health and safety of mothers and children.
•Easy to Clean and Care: Before use, the breast pump flange inserts can be sterilized with steam, boiling water, or microwave steam bags. After each use, the replacement breast pump parts can be washed with mild soapy water, then rinsed with clean water. Additionally, the sponge cleaning brush included in the kit offers convenience. To maintain optimal function, we recommend replacing the pump accessories every 2 months.
•Perfect Pumping Experience: Comfortable and suitable nipple flange insert can not only improve the efficiency of pumping, but reduce friction against the nipples or feels squeezed in the flange channel. With this nipple ruler, you can easily choose the correct size and achieve a perfect pumping experience. The 13/15/17/19/21mm flange insert combination also helps moms save time and money in choosing the appropriate size.

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$6.99

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Mompmuir

Mompmuri Breast Pump Cushion – M | Breast Pump Accessory, Sizing Insert for Flange Shields | Elastic Nipple Flange Inserts | Silicone Lacteck Flange | Compatible with Flange Sizes 24-26mm (2 pc)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Enhanced Comfort - Includes 2pc clear breast pump cushions (1 pair). If you are experiencing pain or discomfort while breast pumping or are between flange sizes and need a customized fit, Our Breast Pump Cushions are a soft, stretchy, and clear (for easier alignment) accessory for your breast pump flanges.
•Firm But Stretchy - This cushion’s slightly friction material allows for a good seal with the flange, while retaining its cone-shape for easy insertion and removal from the flange. Cushions decrease flange size by 2 mm, Size M work best for moms looking for a desired flange fit between 22-24mm. Therefore, our cushions are compatible with flange sizes 24-26mm.
•Easy Clean - Durable, clear, and comfortable, you can keep up milk collection and storage for your baby with much more comfort. Exposing the cushions to high temperatures will make them more prone to tearing, so avoid sterilizing cushions with boiling water or steamer bags. Hand clean only with warm water and gentle soap.
•Available in 4 Sizes - Fit your breast shape naturally, there is always a size for you. Moms have been a part of creating, testing, and redesigning The Breast Pump Cushions since the beginning. The moms (and dads!) behind this product make it our mission to supply mothers everywhere with a simple and effective solution to the pains of pumping.
•Compatibility - Cushions are compatible with most breast pump brands and accessories on the market. Made of BPA-free, food-safe, stretchy plastic.

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$14.98

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NENESUPPLY

Nenesupply 1st Generation 19mm Flange Insert Compatible with Elvie Stride Flange Pump Parts Medela Momcozy Spectra Flange Willow Reduce 24mm to 19mm Use as Elvie & Medela Insert

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•CONTENT: 2pc 19mm NENESUPPLY Silicone Flange Inserts compatible with 24mm of Elvie flange, Elvie Stride flange, Momcozy flange, Medela flange (Personalfit Flex and Freestyle Hands-Free), Spectra flange, Willow flange, Willow Go flange, and Motif Luna flange. Reduce 24mm to 19mm. MADE BY NENESUPPLY. Compatible with Elvie pump parts accessories and Willow pump parts.
•COMPATIBLE PUMPS: Work with 24mm FLANGES of most breast pumps in the market. See product photo for illustrations.
•AVAILABLE IN 15, 17, 19, 21mm. MADE FROM SOFT SILICONE: Soft silicone makes pumping more comfortable. Reduce flange funnel to 19mm. Suitable for moms with smaller nipples. Correct flange sizes make pumping more efficient.
•NO LOSS OF SUCTION- Embeded sealing circles creates a complete seal. EASY TO INSTALL & REMOVE - Easy to push in and pull out the inserts. Hassle-free
•EASY TO CLEAN: Dishwasher safe (top rack only). BPA and DEHP Free. Comply with EU and USA regulations for materials that contact food. Tested by independent labs for quality and safety.

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$9.99

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