10 Best Medela Breast Pump Flange Insert in The UK

Last updated on 11/08/2025

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Medela Harmony Manual Breast Pump, Compact Swiss Design with PersonaFit Flex Shields and Medela's 2-Phase Expression Technology

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Why We Love It

Portable and discreet for anywhere.
Mimics natural breastfeeding experience.
Rotatable design for comfort.

Main Highlights

Discreet and Quiet: The Medela Harmony breast pump is small enough to fit into a handbag, without the need for batteries or wires, so that mums can pump confidently anytime, anywhere
Lightweight, Portable: The Medela Harmony manual breast pump is great for busy mums serving as a convenient alternative to an electric pump or for occasional use if you typically breastfeed your baby
Comfortable Fit: The oval-shaped Medela PersonalFit Flex shield has a soft, smooth, flexible rim that can be rotated 360 degrees, allowing you to easily adjust its position to suit the shape of your breast
2-Phase Expression Technology: Medela's innovative technology replicates the body’s natural rhythms, delivering a comfortable and intuitive pumping experience
Items Delivered: 1 x Medela Harmony manual breast pump; 1 x branded handle; 1 x diaphragm with stem and O-ring; 1 x connector; 1 x valve; 1 x membrane & spare membrane; 1 x PersonalFit Flex breast shield (size M); 1 x 150 ml bottle with lid; 1 x bottle stand; 1 x instruction manual

Maymom Myfit 17 Mm Shields Small; Compatible with Medela Breast Pumps-Personalfit, Freestyle, Harmony, Maxi, Freestyle Flex Connector; Connect to Widemouth/Narrow Connector, 2Pcs

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Why We Love It

Compatible with various Medela pumps.
Sealed and safe retail packing.
BPA-free and steam sterilizable.

Main Highlights

2x shield, 17 mom, suitable for mothers with nipple diameter after pumping 15-16 mom, compatible with medela pumps
Compatible with medela pumps (pump in style, lactina, symphony, swing, mini electric freestyle, swing maxi, sonata, freestyle flex and harmony). note: connectors are not included in this listing
Retail poly-bag packed; sealed by the manufacturer - maymom, not original medela parts
Made of bisphenol-a (bpa)/dehp-free material and all components are steam safe for sterilization

Maymom Myfit 15 Mm Shields; Compatible with Medela Breast Pump- Personalfit, Freestyle, Harmony, Maxi, Freestyle Flex Connector; Connect to Widemouth/Narrow Connector, 2Pcs

Why We Love It

Suitable for various Medela pumps.
Ensures safe sterilization process.
BPA/DEHP-free material used.

Main Highlights

2x shield, 15 mom, suitable for mothers with nipple diameter after pumping 13-14 mom, compatible with medela pumps
Compatible with medela pumps (pump in style, lactina, symphony, swing, mini electric freestyle, swing maxi, sonata, freestyle flex and harmony). note: connectors are not included in this listing
Retail poly-bag packed; sealed by the manufacturer - maymom, not original medela parts
Made of bisphenol-a (bpa)/dehp-free material and all components are steam safe for sterilization

Medela PersonalFit Flex Breast Shields - More milk and more comfort while pumping, for use with any Medela breast pump, size M

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Why We Love It

More comfort and efficiency. Better milk flow. Customizable fit for comfort.

Main Highlights

More milk, more comfort: Our scientists proved PersonalFit Flex breast shields delivered more comfort and efficiency¹ in clinical studies with breastfeeding mums across over 1,000 pumping sessions
Better milk flow: PersonalFit Flex encourages your milk flow by helping prevent compression of the milk ducts
Designed to fit: The oval shape of the PersonalFit Flex shield with its soft, smooth, flexible rim can be rotated 360 degrees, so you can easily adapt its position to suit your breast shape
Shaped around you: PersonalFit Flex shields come in four different tunnel sizes; our fitting guide will help find the right one for you
Items delivered: 2 x Medela PersonalFit Flex breast shields, instructions for use

Nursi Luna Flange Sizing Kit 3 in 1 with 10PCS Flange Inserts 13/15/17/19/21mm, Silicone Breast Pump Flanges Insert Kit for 24mm Electric Breast Pump, Pumping Breastfeeding Essentials Kit for New Mom

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Why We Love It

Enhances comfort and efficiency.
Highly compatible, multiple sizes.
Safe, food-grade silicone.

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 breast pump 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. They also enhance safety and maximize the performance of the breast pump

5pcs Breast Pump Flange Insert, with Soft Rule Set Silicone Flange Inserts Compatible with TSRETE Medela Momcozy S9/S9Pro/S12/S12Pro Wearable Breast Pumps (13/15/17/19/21mm)

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Why We Love It

Adjustable size for comfort.
Includes helpful measurement tools.
Made from premium silicone.

Main Highlights

Package Include: You will receive 5 flange inserts, compatible with 24mm/0.9 inch breast shields. It will reduce the 24mm/0.9 inch shielded nipple channel to 13mm/15mm/17mm/19mm/21mm(0.5 inch/0.6 inch/0.67 inch/0.7 inch/0.8 inch). It shrinks the 24mm/0.9 inch shielded connector to the correct size.
Soft Ruler Set: We also carry a nipple ruler and a 60 inch/152cm soft ruler that can measure your body changes during pregnancy and postpartum, helping moms quickly choose the perfect flange insert.
Premium Material: Our flange inserts and nipple rulers are made of premium silicone material, which is soft, safe and no smell, so you can use it with confidence.
Product Feature: Some mothers experience nipple discomfort when pumping, and nipples change at different times, so expressing with the correct flanged insert will be more comfortable and efficient.
Compatible With: These breast pump flange inserts are compatible with TSRETE, Medela, Momcozy S9/S9Pro/S12/S12Pro 24mm/0.9 inch breast shields (not suitable for 27mm/1 inch shields). Please note that our product is not sponsored or endorsed by, or affiliated with the brands it fits, including TSRETE, Medela, Momcozy.

24 mm Oval Flanges Shields Compatible with Medela Pumps, Replacement Parts for Pump in Style, Symphony, Swing Maxi, Harmony and Personalfit Flex–Breast Pump Accessories

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Why We Love It

Compatible with popular pump models.
Oval shape for optimal comfort.
BPA-free and safe materials.

Main Highlights

[Compatible with Medela Pump Parts] PumpMom 24mm flex shields are compatible with the Medela New Pump in Style with MaxFlow, FreeStyle, Swing Maxi, Sonata, Freestyle Flex, Harmony (Manual Pump), Lactina, Symphony and Mini Electric FreeStyle.
[Oval Shape] The oval-shaped flange rotates freely, letting you find the most comfortable angle while maintaining strong suction. Compatible with various Medela breast pumps.
[Comfort Factor] The soft-rimmed PumpMom flex breastshield makes for a much more comfortable fit for pumping.
[Improved Breast Pumping Efficiency] An improved 106°wide angle hole on the flex shield allows for an improved fit during pumping.
[Material Safety] BPA-free and made from food-grade materials. These products are sealed by the manufacturer.

10PCS Flange Inserts for Breast Pump 13/15/17/19/21mm, Compatible with Momcozy M5 S9/S12 Pro/KISSBOBO/Medela/Jheppbay Electric Breast Pumps, Nipple Ruler&Cleaning Brush 24mm Flange/Shield, BPA-Free

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Why We Love It

Wide range of sizes.
Universal fit assurance.
Precision fit guide.

Main Highlights

Wide Range of Sizes - Our breast pump flange inserts are available in 5 sizes (13, 15, 17, 19, 21mm) to accommodate the dynamic needs of mothers throughout their breastfeeding journey. Regardless of being new to breastfeeding or having considerable experience, every mother can find her precise fit within this set.
Universal Fit Assurance - Our flange sizing kit is engineered for a perfect fit with most 24mm Shields/Flanges, ensuring compatibility with leading brands such as KISSBOBO, Momcozy, Medela, Elvie, Spectra, Lansinoh, Jheppbay, among others, offering a broad choice for almost every mother. Note: Excludes compatibility with 27-28mm shields.
Precision Fit Guide - Acknowledging the variability of nipple sizes during breastfeeding, selecting a flange that fits precisely is paramount. We bolster breastfeeding mothers' confidence by including a complimentary nipple sizing tool, eradicating the guesswork and guaranteeing the ideal fit for exceptional comfort and optimal pumping efficiency.
Portability for Every Journey - Designed with mobility in mind, our flange insert set, including all supplementary items, guarantees effortless transportation. Light and user-friendly, it supports mothers in providing a comfortable and secure breastfeeding environment for their baby, regardless of location.
Comprehensive Cleaning Kit Included - Each flange sizing kit is accompanied by a premium cleaning brush and a precise nipple ruler, ensuring daily upkeep and the perfect flange fit are effortless for mothers. The brush is designed to meticulously clean every corner, while the ruler simplifies achieving a personalized fit, promising unmatched comfort.

Nuliie 10PCS Flange Inserts 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps, BPA Free Inserts, Compatible with Momcozy/Spectra/Bellababy/TSRETE/Nuliie Breast Pumps

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Why We Love It

Increases milk production comfortably.
Easy cleaning and safety ensured.
Customer-friendly service and sizing.

Main Highlights

[HIGH COMPATIBILITY] Nuliie flange inserts 13/15/17/19/21mm (10pcs) fit most 24mm 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 card 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 offer 24/7 customer service support to answer any questions. If the size isn't right after purchase, take advantage of our free replacement service.
[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 product inside.

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

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Why We Love It

Comfortable breastfeeding experience.
Customizable flange sizing kit.
Safe, BPA-free silicone material.

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

8.7

Excellent

We scanned 1661 products

We reviewed these offers relevant to the Medela Breast Pump Flange Insert within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Medela, Maymom, Nursi Luna, PEUTIER, PUMPMOM-US, ANWIKE, Nuliie, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Medela Breast Pump Flange Insert in the market, we considered we took a deep dive into 8306 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Medela Harmony Manual Breast Pump, Compact Swiss Design with PersonaFit Flex Shields and Medela's 2-Phase Expression Technology. We love many things about this product by Medela. What sets it apart from the competition is Portable and discreet for anywhere, Mimics natural breastfeeding experience, Rotatable design for comfort.
The best value product for most shoppers and where user satisfaction is continuously the highest is Maymom Myfit 17 Mm Shields Small; Compatible with Medela Breast Pumps-Personalfit, Freestyle, Harmony, Maxi, Freestyle Flex Connector; Connect to Widemouth/Narrow Connector, 2Pcs by Maymom based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Medela Breast Pump Flange Insert and the best cost-to-value ratio is Medela Harmony Manual Breast Pump, Compact Swiss Design with PersonaFit Flex Shields and Medela's 2-Phase Expression Technologyat Medela with a 30% discount.
Our list of the best Medela Breast Pump Flange Insert is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Medela Breast Pump Flange Insert in The UK

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We scanned 1661 products

We concluded that: