The Best 21 mm breast shield of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 21 mm breast shield of 2025. Check our ranking below.
2,136 Reviews Scanned
Rank No. #1
Maymom MyFit 21mm Two-Piece Design Small Breastshields, Compatible with Medela Breast Pump; Ideal for HandsFree Bra; Not Original PersonalFit Flex Breast Shield,Not Original Freestyle Pump Parts, 2pcs
- 2x shields (21 mm, suitable for mothers with niple diameter AFTER pumping 19-20 mm). Compatible with Medela pumps (New Medela Pump in Style with MaxFlow Pro Pro+, Pump in style, Lactina, Symphony, Swing, Mini Electric FreeStyle, Swing Maxi, Sonata, Freestyle Flex and Harmony). NOTE: connectors are not included in this listing. Also known as small breastshield, compatible with Medela 21 mm shield. Also compatible with Lansinoh SignaturePro SmartPump Manual Pump, replace Lansinoh Pump Parts, Lansinoh Flanges.
- US FDA registered medical device (No. D192526); Products are inspected by US FDA. Complies with US FDA and EU standards for containers that contact food and class II medical device; Test reports are online for your reference;
- Retail poly-bag packed; sealed by the manufacturer - Maymom, not original Medela parts
- Made of Bisphenol-A (BPA)/DEHP-free material. Can be cleaned with boiling water or water steam.
- Available in various sizes (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 23, 24, 27, 28, 30, 32, 34, 36mm) for purchase.
Rank No. #2
Elvie Breast Pump Breast Shield - 21mm - Nipple Flange for Pumping Breast Milk - Accessories & Breastfeeding Essentials for Electric Pumps - BPA Free, Dishwasher Safe - 2 Pack
- Comfortable: Elvie's mission is to create smarter technology and convenient baby essentials for women; The unique fitting system of the Elvie pump breast shields ensures greater comfort, correct nipple alignment and effective suction
- Baby Safe Materials: Elvie 21mm breast shields, 2 pack, are made with the highest quality BPA free plastic to ensure durability and safety
- Size Guide: The 21mm breast shield is made to fit nipple widths that measure between 16mm and 18mm; The size of your nipple can change over the course of your feeding journey, which may require a different size breast shield to be purchased for the best fit
- Easy to Clean: All washable components should be cleaned after every use, either using warm water and mild dishwashing soap or in the dishwasher, and sanitized once per day; Sanitize parts in boiling water for five minutes; Also suitable for microwave, steam or cold water sanitization
- Not compatible with Elvie Stride
Rank No. #3
PumpMom-us 21mm Soft Rim Flanges Compatible with Medela Breast Pump PersonalFit, Freestyle, Maxflow, Freestyle Flex Swing Maxi Connectors, Replace 21 Flange Accessories with Wider Opening Angle
- [Compatible with Medela Pump Parts] PumpMom 21mm Breast shields are compatible with the Medela New Pump in Style with MaxFlow, FreeStyle, Swing Maxi, Sonata, Freestyle Flex, Lactina, Symphony and Mini Electric FreeStyle. Not original pump parts.
- [Comfort Factor] The soft-rimmed PumpMom flex breast shield makes for a much more comfortable fit for pumping.
- [Improved Breast Pumping Efficiency] An improved 106° broad-angle hole on the Oval shape flex shield allows for an improved fit during pumping.
- [Easy to Use] Simple to clean, install or remove. Compatible with various Medela breast pumps.
- [Material Safety] BPA-free and made from food-grade materials. These products are sealed by the manufacturer.
SaleRank No. #4
Flange Inserts 13/15/17/19/21mm 10PC,Compatible with Momcozy S12 Pro/S9 Pro/S12/S9 Wearable Breastpump Cup,for Medela/Spectra/Bellaaby/TSRETE 24mm Shields/Flanges,Reduce 24mm Tunnel Down to Other Size
- Compatibility: The Flange Inserts 10pc are breast pump accessories that can be used with most 24mm Shields/Flanges.Compatible with any S9 Pro/S12 Pro/S9/S12 wearable breast pump. (For example, compatible with Momcozy S12 Pro/S9 Pro/S12/S9 Hands-Free breast pump). Use with 24mm breast Shields for TSRETE/Medela/Spectra/Elvie/Willow/Bellaaby/Motif Luna/Ameda MYA/Ainsir/Phanpy/Lulia/NaNaLazy/Luxlady/kidzio/eulumap/Teexin/Fisroa/KISSBOBO/Goldeep/BIOBOO/Mumeasy/Nanawawa/TOVVILD/CPPSLEE and others.
- Usage: Our 10-pack flange inserts sets contain two of each size (5 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.
- Attention: 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.
Rank No. #5
Flange Insert 21mm, Compatible with S9/S12/S9Pro/S12Pro Wearable Breast Pump Parts Replace, Pump Shield/Flange Insert to Reduce 24mm Down to 21mm
- ✅Flange Insert 21mm, wearable breast pump flange suitable for S9 / S12 / S9Pro / S12Pro breast pump (with 24 mm breast shields) and almost any milk collector 24mm.Package include: 2pcs Flange Insert 21mm (transparent).
- ✅Choosing the right flange insert for pumping is more comfortable and efficient. Some mothers have the experience of nipple swelling while milking, so it's important to observe how your nipples look during a pumping session. While pumping, your nipple should not rub or feel squished inside the flange tunnel.
- ✅BPA Free, made of silicone material. It's safe, soft and odorless, nice pump parts replacement. And all AFONTOTO pump parts that come in contact with breast milk are BPA free, giving you peace of mind about your baby's milk.
- ✅Easy to clean, Wash flange insert after each use with warm soapy water and rinse well with clean water. (Our material can be sanitized with water steam, boiling water or microwave-steam bags.)
- ✅We`ve committed our lives to provide the best breast pumps accessories and customer care, supporting every mother with the beauty of parenthood. Please reach out to us if you have any doubt about our products, we will assist you within 24 hours!
SaleRank No. #6
Begical Flange Inserts 21mm for Medela/Spectra/Elvie/momcozy/tsrete/Willow/Motif Luna/Ameda MYA Breastpump 24mm Breast Shields. Reduce 24mm Nipple Tunnel Down to 21mm; 2pc/Each (21mm)
- Begical 21 mm inserts to use with Medela 24 mm shields. It will reduce the 24-mm shield nipple tunnel down to 21 mm. Great solution for small-nippled mothers using Medela freestyle, Medela Sonata, Medela Swing-Maxi pumps.
- BPA free, made of silicone material.
- Great solution for small-nippled mothers using Spectra and Medela Freestyle, Harmony, Sonata, and Swing-Maxi pumps, Proper nipple tunnel fit is essential for comfort and efficient milk output.
- Seamless Compatibility For Optimal Milk Expression: Suitable for nipple diameter 18-20mm(after a pumping session) .
- Also compatible with elvie wearable breastpump and motif luna and amada mya 24mm flange,Attention：Compatible with amada mya and motif luna 24mm flanges，after testing, the size of 24mm is smaller than others ，so it is relatively difficult to install it. It is necessary to push it into Nipple Tunnel as much as possible to make it fit.Moreover, it is more difficult to remove than others.
Rank No. #7
Medela PersonalFit Breast Shields, 2 Pack of Small 21mm Breast Pump Flanges, Authentic Medela Spare Parts, Made Without BPA
- SEAMLESS COMPATIBILITY FOR OPTIMAL MILK EXPRESSION: Proper breast shield fit is essential for comfort and efficient milk output, so you can continue pumping with ease and feeding your little one breast milk for as long as you choose; our PersonalFit Breast Shields are compatible with Medela breast pumps EXCEPT Single Deluxe
- CONVENIENT RANGE OF SIZES TO CHOOSE FROM: With 5 size options, every mom can quickly find the most comfortably fitted breast shields for pumping and maximized milk expression while helping to avoid nipple trauma or irritation – sizes available are 21mm, 24mm, 27mm, 30mm, and 36mm
- DESIGNED FOR USE WITH PERSONALFIT CONNECTORS: Medela’s PersonalFit Breast Shields are designed for use with the companion PersonalFit Connectors and easy attachment to your Medela breast pump
- ENHANCED COMFORT AND PERSONALIZATION: We know you’re unique and so are your needs – these breast shields provide an individual fit that allows you to personalize your breast pump, discover the most comfortable and efficient way to pump, and enhance your overall breast milk feeding experience Unable to submit changes due to item does not have a selector box when searched/listed in the catalog.
Rank No. #8
Maymom Flange 21mm Insert Compatible with Medela/Spectra/Elvie/momcozy/tsrete/Willow/Motif Luna/Ameda MYA Breastpump 24mm Breast Shields. Reduce 24mm Niple Tunnel Down to 21mm
- Maymom 21 mm inserts compatible with most 24 mm shields. It will reduce the 24-mm shield nipple tunnel down to 21 mm. Great solution for small-nippled mothers using Medela Freestyle Flex, Medela Sonata, Medela Swing-Maxi, Pump in Style, Pump in Style with MaxFlow pumps, and Medela Hands-free Cup(24 mm).
- BPA free, made of food-contact grade silicone material. Safe for babies and mothers
- Great solution for small-nippled mothers using Spectra and Medela Freestyle, Harmony, Sonata and Swing-Maxi pumps. Proper nipple tunnel fit is essential for comfort and efficient milk output.
- Compatible with Elvie wearable breastpump and Motif Luna and Amada Mya and Mya Pro 24mm flange but NOT Mya Joy. NOTE: Because the ID of the Motif Luna and Ameda Mya flange shaft is smaller, you will need a little extra force to install/remove Maymom inserts into/off the shaft.
- Not compatible with Ameda 25 mm Purely Yours Flange or Mya Joy. In this case, buy the long version of the Maymom inserts
Rank No. #10
QIUXQIU The 21mm Flange Plug is Suitable for Wearable Breast Pumps Such as S9/S9pro/S10/S12/S12pro/, reducing The Size Channel of The 24mm/27mm kit to 21mm (2pcs)
- Flange Inserts 21mm: The 21mm wearable breast pump flange/shield inserts are compatible with Breast Pumps. Diaphragm is transparent, made by QIUXQIU, It will reduce the 27mm shield/flange nipple tunnel down to 21mm
- Compatible pump: 21mm flange insert, suitable for S9/S9pro/S10/S12/S12pro wearable breast pump
- Material Safety& BPA Free: Made with food-grade silicone material. It can be sterilized with steam, boiling water, or a microwave steam bag
- Easy to clean: After each use, clean the replaced pump components with warm soapy water and rinse thoroughly
- Attention: The size of your flange insert is important for comfort and efficient pumping. Some moms have experienced nipple swelling while milking, so it is important to observe the appearance of the nipple during pumping. The wearable breast pump flange inserts are recommended to be replaced every 1 to 2 months. Please choose the right size flange inserts
Last update on 2023-07-15 / Affiliate links / Images from Amazon Product Advertising API
How Do You Buy The Best 21 mm breast shield?
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- Is it worth buying an 21 mm breast shield?
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We’re convinced that you likely have far more questions than just these regarding 21 mm breast shield, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.
Potential sources can include buying guides for 21 mm breast shield, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 21 mm breast shield. Make sure that you are only using trustworthy and credible websites and sources.
We provide an 21 mm breast shield buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 21 mm breast shield currently available on the market.
This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:
- Brand Value: Every brand of 21 mm breast shield has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
- Features: What bells and whistles matter for an 21 mm breast shield?
- Specifications: How powerful they are can be measured.
- Product Value: This simply is how much bang for the buck you get from your 21 mm breast shield.
- Customer Ratings: Number ratings grade 21 mm breast shield objectively.
- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 21 mm breast shield.
- Product Quality: You don’t always get what you pay for with an 21 mm breast shield, sometimes less, and sometimes more.
- Product Reliability: How sturdy and durable an 21 mm breast shield is should be an indication of how long it will work out for you.
We always remember that maintaining 21 mm breast shield information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.
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