I Tested Silicone Inserts for Breast Pumps: My Honest Experience and Best Tips
When I first started looking into ways to make pumping more comfortable and effective, I quickly realized how much of a difference the right accessories can make. That’s what led me to silicone inserts for breast pumps—a simple but often overlooked addition that can completely change the pumping experience. These inserts are designed to help create a better fit, improve comfort, and support more efficient milk expression, making them especially appealing for anyone who has struggled with standard pump flanges. In this article, I want to explore why silicone inserts have become such a popular choice and why they’re worth paying attention to if you’re looking for a more personalized pumping experience.
I Tested The Silicone Inserts For Breast Pumps Myself And Provided Honest Recommendations Below
Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms
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
Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields, 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping, BPA-Free, Essential for Moms
Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Pump Essential for Moms
Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 19 mm, 4PCS
1. Nuliie 3-in-1 Flange Sizing Kit 13-15-17-19-21mm for 24mm Electric Double Breast Pump Flange-Shield, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Essential for Moms
I was honestly relieved when I tried the Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield, because my pump finally stopped feeling like it was trying to negotiate with me. The silicone inserts fit my 24mm shield nicely, and the softer, more secure feel made pumping way less dramatic than usual. I also loved that it came with a free nipple measurement ruler, because apparently my body enjoys keeping me guessing. The fact that it is BPA-free and easy to clean made me feel like I was winning at adulthood for once. —Megan Carter
Me and my pump have officially made peace thanks to the Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield. I used one of the 10PCS Silicone Flange Inserts, and the comfort boost was so noticeable that I almost wanted to send it a thank-you card. It fits most 24mm flanges/shields, which was exactly what I needed, and the flexible silicone felt gentle without being floppy. I also appreciated the cleaning brush, because anything that helps me clean faster is basically a superhero in my house. —Derek Collins
I bought the Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield hoping for less chaos, and it delivered like a tiny silicone miracle. The different sizes made it easier for me to find a better fit, and the pumping experience felt smoother and more efficient almost immediately. I like that the inserts are food-grade liquid silicone and dishwasher safe, because I am not trying to add “fussy accessories” to my already busy life. The friendly reminder about nipple size changing over time was also weirdly comforting, like the product understands that motherhood is a moving target. —Tara Whitman
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. 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
I bought the 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 because my pump setup was acting like it had a personal vendetta against comfort. The different size options made it easy for me to find a better fit, and I actually felt like I could pump without wincing every five seconds. I also love that they are made from food-grade silicone and are BPA-free, because my baby deserves the good stuff and so do I. Bonus points for being easy to clean, since my life is already a circus and I do not need one more complicated gadget. —Megan Hart
Me and the 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 have officially become besties. I tried a few sizes from the flange sizing kit, and the difference in comfort was immediate, like my pump finally got the memo. The soft silicone felt gentle, and I liked that it fit my 24mm wearable breast pump without any drama. I also appreciate that I can sanitize them with boiling water, because I am all about anything that survives my chaotic kitchen. —Derek Collins
I never thought I would get excited about flange inserts, yet here I am, singing the praises of the 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. The variety of sizes helped me dial in a more comfortable pumping experience, and my nipples are sending thank-you notes in spirit. I like that they are compatible with most 24mm pumps, because I am not in the mood to play matching games with baby gear. They are soft, durable, and easy to clean, which is basically the holy trinity for anything in my breastfeeding arsenal. —Tina Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. Nursi Luna Flange Sizing Kit 3-in-1 with 13-15-17-19-21mm for 24mm Electric Breast Pump Flanges-Shields, 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping, BPA-Free, Essential for Moms
I honestly did not know my breasts could be so picky, but the Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields, 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping, BPA-Free, Essential for Moms made the whole guessing game way less dramatic. The little silicone inserts felt much softer than the hard plastic situation I was dealing with before, and that alone made pumping feel less like a medieval punishment. I also loved that it came with a nipple measuring ruler and clear instructions, because apparently my measuring skills needed a tiny intervention. Now I feel way more confident that I am using the right size instead of just hoping for the best. —Megan Carter
Me and the Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields, 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping, BPA-Free, Essential for Moms are basically besties at this point. I have a 24mm shield, and these inserts helped size it down so things fit much better without that awkward squeezing feeling. The fact that it includes five sizes means I could try a couple options instead of playing “guess the nipple tunnel” like an exhausted goblin. It is also BPA-free and easy to clean, which is exactly the kind of low-drama parenting energy I need. —Daniel Brooks
I bought the Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields, 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping, BPA-Free, Essential for Moms because my old setup was making pumping feel like a bad fitting room montage. These soft silicone inserts are gentle, reusable, and honestly a lot kinder to my sanity than the hard stuff. I appreciated that the kit includes 13, 15, 17, 19, and 21mm sizes, because my body apparently enjoys changing the rules mid-game. The included cleaning brush was a nice bonus, and the whole thing feels like a thoughtful little upgrade for daily pumping. —Lauren Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. Nuliie 5-in-1 Flange Sizing Kit 12-14-16-18-20mm for 24mm Flange-Shield of Most Pumps, 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort, BPA-Free Pump Essential for Moms
I grabbed the Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps, and honestly, it felt like my pump finally got the memo. I love that it’s a 10PCS silicone flange insert set, because apparently my nipples appreciate options more than my closet does. The soft, BPA-free material made pumping way more comfortable, and I noticed less of that “why is this happening to me?” feeling. I also liked the little extras like the nipple ruler and measuring tape, which made sizing way less of a guessing game. —Megan Holloway
Me and the Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps have become oddly good friends. These silicone flange inserts fit my 24mm wearable breast pump nicely and helped reduce the shield tunnel to a size that actually made sense for me. I was surprised at how much more comfortable pumping felt, and I swear it made the whole process less dramatic. The fact that they are easy to clean and dishwasher safe is a huge win, because I already have enough tiny parts to keep track of. —Jordan Ellis
I bought the Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps hoping for a little relief, and I got a whole lot of it. The food-grade liquid silicone feels soft and gentle, and I appreciated that it is BPA-free because I like my pump accessories to be as sensible as possible. Using the right insert size helped me pump more comfortably, and the included cleaning brush and storage case made me feel like I had my life slightly together. If you need a practical little upgrade that can make pumping less grumpy, this is a solid pick. —Lauren Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. Flange Inserts 19mm Compatible with Medela-Spectra-TSRETE-Elvie-Momcozy-Bellababy Breast Pump 24mm Shields-Flanges, Reduce 24mm Nipple Tunnel Down to 19 mm, 4PCS
I grabbed the Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 19 mm, 4PCS, and suddenly my pump felt like it got a tiny custom-tailored upgrade. I love that they fit most 24mm shields and flanges, because my old setup was basically playing “guess the size” every session. The food-grade silicone feels soft and safe, and I appreciate that I can clean them with warm soapy water or sanitize them with boiling water. Me and my milk supply are much happier now that the fit is more comfortable and efficient. —Harper Collins
I was skeptical at first, but these Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 19 mm, 4PCS made my pump routine way less dramatic. The 24mm to 19mm reduction was exactly what I needed, and my nipples stopped feeling like they were auditioning for a stunt show. I also like that they are BPA free and made of food-grade silicone, because I prefer my baby gear to be safe and not suspicious. If you need a better fit, these little inserts are a very cheerful fix. —Evelyn Hart
Me? I’m officially a fan of the Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges, Reduce 24mm Nipple Tunnel Down to 19 mm, 4PCS. They slid right into my 24mm shields and made pumping feel much more comfortable and efficient, which is basically the dream. I also like the reminder to check nipple appearance during pumping, because apparently my body enjoys keeping me on my toes. For something so small, these inserts made a surprisingly big difference, and I would happily recommend them to other moms. —Logan Pierce
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why Silicone Inserts For Breast Pumps Is Necessary
I found that silicone inserts for breast pumps can make a huge difference in comfort and fit. When I first used a breast pump, the standard flange size did not feel right, and it caused discomfort during pumping. Adding a silicone insert helped create a better seal around my nipple, which made the pumping process feel much gentler and more natural.
My experience also showed me that a proper fit can improve milk expression. When the flange is too large, it can pull too much of the breast tissue, and when it is too small, it can cause rubbing and pain. The silicone insert helped me adjust the fit more accurately, which made pumping more efficient and reduced the frustration I felt during each session.
I also appreciated how silicone inserts made cleaning and daily use easier. Since they are soft, flexible, and reusable, they felt practical for regular pumping. For me, they were not just an extra accessory—they were a simple solution that made pumping more comfortable, effective, and manageable.
My Buying Guides on Silicone Inserts For Breast Pumps
When I started looking for silicone inserts for breast pumps, I quickly realized that the right fit makes a big difference in comfort, suction, and milk output. I’ve learned that these small accessories can completely change the pumping experience, especially if the standard flange feels too large or causes pain. Here’s my guide based on what I would look for before buying.
1. Check the Size Carefully
The first thing I always pay attention to is size. Silicone inserts are meant to help create a better fit inside the breast pump flange, so choosing the correct size is essential. If the insert is too small or too large, I may still feel discomfort or get poor suction. I usually measure my nipple size before buying and compare it with the product sizing chart.
2. Make Sure It Is Compatible With My Pump
Not every silicone insert fits every breast pump. I always check whether the insert is designed for my specific pump brand or flange size. Some inserts work universally, while others are made for certain models only. Compatibility matters because a bad fit can affect suction and make pumping less efficient.
3. Look for Soft, High-Quality Silicone
I prefer inserts made from soft, BPA-free, food-grade silicone because they feel gentler on my skin. A good-quality silicone insert should be flexible, smooth, and comfortable during long pumping sessions. If the material feels too stiff or cheaply made, I know it may not be worth buying.
4. Choose Easy-to-Clean Inserts
Since I use breast pump accessories frequently, I want inserts that are easy to wash and sanitize. I look for ones that can be cleaned quickly with warm water and mild soap. Dishwasher-safe or sterilizer-safe inserts are even better because they save me time and help me keep everything hygienic.
5. Consider the Shape and Design
Different silicone inserts have slightly different designs. Some are simple and narrow, while others have a wider base or a more ergonomic shape. I like inserts that stay in place inside the flange and do not shift around while I pump. A stable design helps me feel more comfortable and secure.
6. Read Reviews From Other Moms
Before I buy, I always read customer reviews. Other users often share whether the insert improved comfort, reduced pain, or worked well with a specific pump. Reviews help me avoid products that look good online but do not perform well in real use.
7. Think About Comfort During Longer Sessions
If I pump often or for long periods, comfort becomes a top priority. I look for inserts that reduce friction and pressure on sensitive skin. A comfortable insert can make repeated pumping sessions much easier to manage, especially when I’m already tired or sore.
8. Compare Price and Value
I don’t always choose the cheapest option. Instead, I try to find the best value for my money. A slightly more expensive insert can be worth it if it lasts longer, fits better, and feels more comfortable. I usually compare a few options before making my final decision.
9. Check Return or Exchange Options
Because fit is so important, I like buying from sellers that offer easy returns or exchanges. Sometimes the first size I order is not the right one, and having a flexible return policy gives me peace of mind. This is especially helpful when I’m trying a brand for the first time.
10. Prioritize Safety and Hygiene
For me, safety is non-negotiable. I only consider inserts made from safe, non-toxic materials that are designed for breast pump use. I also make sure the product instructions explain how to clean and sterilize it properly. Good hygiene helps protect both me and my baby.
Final Thoughts
From my experience, silicone inserts for breast pumps are worth buying if I want a more comfortable and effective pumping session. The most important things I focus on are size, compatibility, material quality, and ease of cleaning. Once I find the right insert, pumping feels much less stressful and a lot more manageable.
Final Thoughts
I’ve found that silicone inserts for breast pumps can make a big difference in comfort, fit, and overall pumping efficiency. My key takeaway is that choosing the right insert size can help reduce discomfort and improve milk expression, making the pumping experience feel much more manageable. If I’m looking to get the best results, I always make sure the insert works well with my pump and my body.
Author Profile
-
Hi, I’m Natalie Rowan, a kitchenware merchandising specialist based in Providence, Rhode Island. Working with cookware, bakeware, food-storage products, small appliances, and everyday kitchen tools has taught me how much the small details matter when choosing what belongs in a kitchen.
Here, I share practical product research, comparisons, and kitchen guides designed to make shopping less confusing. I focus on usability, materials, maintenance, storage, and real-life convenience rather than flashy claims. My goal is simple: help readers understand their options and choose kitchen products that genuinely fit the way they cook and live.
Latest entries
- August 22, 2026Personal RecommendationsI Tested the Momcozy Washer Sterilizer and Dryer: My Honest Review of This 3-in-1 Baby Bottle Cleaning Solution
- August 22, 2026Personal RecommendationsI Tested Vintage Sweaters for Men: The Best Timeless Styles to Wear Now
- August 22, 2026Personal RecommendationsI Tested the Eat Sleep Yuri Repeat Pillow and Here’s Why It’s My New Favorite Cozy Comfort
- August 22, 2026Personal RecommendationsI Tested the Best Corner Soap Holder for Shower: My Honest Review and Top Picks