One-Piece Breastshield w/Valve, Membrane for Medela Breast Pumps (Pump in Style, Lactina, Symphony), 24 mm Standard breastshields; Replacement of Medela PersonalFit Breastshield (Medium 24 mm,
$13.99
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Price: $13.99
(as of Oct 17, 2025 22:00:30 UTC – Details)
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Maymom cares for each mom
Maymom always cares about mothers’ needs on the path of breastfeeding. For years, we hear mothers’ voice for customized, comfortable and easy-to-use tools.
Maymom makes a wide range of aftermarket pump parts including flange, tubing, duckbill valve, backflow protector, collection bottle, milk storage bag adapter, and various kinds of adapters to bridge different systems of name brand breastpumps.
Is Discontinued By Manufacturer : No
Product Dimensions : 4.33 x 3.54 x 4.33 inches; 3 ounces
Manufacturer recommended age : 0 – 3 years
Item model number : M001-2LF2V4M
Date First Available : November 9, 2013
Manufacturer : Maymom
ASIN : B00GKNIGAM
Best Sellers Rank: #9,204 in Baby (See Top 100 in Baby) #173 in Newborn Gift Sets #2,297 in Baby & Toddler Feeding Supplies
Customer Reviews: 4.4 4.4 out of 5 stars 6,992 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
2x One-Piece Breastshield (24 mm, suitable for mothers with niple diameters of 22-23 mm AFTER a pumping session), 2 Valves, 4 Membranes; Compatible with all Medela pumps EXCEPT FreeStyle, Maxi, Sonata, Harmony, Pump in style with maxflow Pro Pro+.
US FDA registered medical device (No. D192499); Products are inspected by US FDA. Complies with US FDA and EUstandards 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 and all components are steam safe for sterilization.
Available in various sizes (13, 15, 17, 19, 21, 24, 25, 26, 27, 29, 30, 36 mm) for purchase.
9 reviews for One-Piece Breastshield w/Valve, Membrane for Medela Breast Pumps (Pump in Style, Lactina, Symphony), 24 mm Standard breastshields; Replacement of Medela PersonalFit Breastshield (Medium 24 mm,
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$13.99
Ruchi –
Finally a fit, and a Quality Made Product
First of all, I just want to say, the product (Maymom made 21mm one-piece breastshield) is quality made, and I have been using it for the past three weeks. No more pains! Ya. I expressed at least 1 oz more milk every session after I have used these 21 mm breastshields. This one piece product works as well as the two piece Medela PersonalFit 21mm one.What I would like to share more is how I came to this product. Like everyone else, I tried the 24 mm breastshield that came with the machine. As a first-time mother, I thought having some pains after a pumping session is normal. I was wrong. After few days of using it, the pains were terrible. I experienced a lot of pains and bruising from using the standard 24mm shields. From the diagrams on Medela’s website and the information that comes with the pump, the flange should fit with just your nipple being pulled in during pumping. It is confusing if you have a mixed areola/nipple area. The problem is that my ‘areola’ protrudes about 1/8 inches and I thought that is part of the ‘nipple’ area when I talked to a lactation consultant. The lactation consultant told me to try larger breastshields. I tried larger one (27 mm), though it did not hurt as much, my milk supply went down by one-third and the bruise area became large. I felt every suction along the pumping. I tried the next size up – 30 mm, even worse!After reading more and more reviews, I decided to try a smaller one. I ordered both Medela’s PersonalFit 21 mm breastshield and this Maymom made one (it is cheaper, and others said it is easier to clean). Tada.. No more pains. Both brands worked well. Finally a FIT.I realized now that when I was using the larger ones (27 mm and 30 mm), it was more of the ‘areola’ that was pulled into the tunnel and the milk ducts were blocked during a suction action. Therefore, less milk supply. When I was using the medium one, the sensitive area of my ‘areola’ was rubbing the tunnel, thus pains.So the bottom line – know what are the nipple and areola of your breasts. It is the nipple part that should go into the breastshield tunnels, not the areola. Choose the right size and pumping will no longer be painful!
Britt –
Work as described!
Worked great for my existing breast pump. Flanges fit true to size. Easy to clean pieces and good for replacement!
mandabear23 –
Highly recommend! Fits madela Instyle pump parts perfectly
This should be the standard issued size with your pump! there is little to no info given on breast shield sizes when your starting your journey to breastfeeding and pumping, and having this little piece of info can be a game changer! I was issued my Madela Instyle Advance pump with 24cm shields, and they were so large I had my whole( small b cup) boob basically squeezing into that thing and losing suction the whole time, having to hold them on to pump anything at all, all the while not knowing any better that it shouldn’t be like that, you shouldn’t have that much in there, and you shouldn’t be in pain. This made ALL THE DIFFERENCE! I actually have milk pumping properly and in abundant amounts, I’m not in pain, and not having to hold onto them the whole time, which was the huge thing. Ladies, if you have small breasts, see if you have the right size shield. Also try a pumping bra that’s not the strapless zipper one from madela. I bought the hofish brand two pack for $25 here on Amazon and it also made a huge difference! I wasn’t constantly pulling it up because of my small chest making the strapless madela one roll downward. They are optional strapless too, but adjustable in the back so it isn’t a crappy zipper that breaks every month or so. purchasing these shields changed my entire perspective on pumping and my whole experience with nursing too. I increased my breastmilk supply having been able to pump properly when needed, and express what I needed when baby was done nursing. Seriously look at the shield size chart from madela, I never knew it existed until I saw these online and looking on Pinterest I found the chart.
Seek Felicity –
A smaller size makes a huge difference
In terms of options, Maymom offers an exceptional assortment of flanges – much more than Medela, which is somewhat sad since Medela offers so many breastfeeding products. I never thought I was going to need the smallest shield that is made. Indeed, I went through bigger sizes – since many women need larger sizes rather than smaller sizes – before realizing Maymom had a handy dandy chart. I actually need a 17 mm flange, which doesn’t appear to exist. Despite my true sizing need, the 19 mm has done wonders in terms of alleviating pains.The suction caused by a hands free pumping bra makes it vital to get a good fitting flange. Don’t just stick with the 24 mm because it could lead to blisters and days of misery. Ultimately, these shields work pretty well. I like the one piece function for the stability it provides. When I am removing the flanges from my hands free bra, I don’t want pieces to disconnect – it happened to me with the multi-piece Medela flanges and milk went everywhere. The single piece, however, can make cleaning more difficult.The shields are made of the same hard plastic as the Medela shields. In addition to an even smaller size, I wish Maymom would look into flexible flanges or angled flanges (kind of like Pumpin Pals but in a smaller size). I guess Medela once made soft plastic flanges but they were pulled.I urge you to consider this company for your pumping supply needs. I’m appreciative that I can get supplies quickly. I’ve tried tubing from this company, and it actually has worked better than the Medela tubing that came with my pump. The valves and membranes are also equal in quality to the Medela pieces.
IS2000 –
Funktioniert sehr gut an der Medela Symphony, nur an der Medela Swing Maxi (für zwei Brüste gleichzeitig) muss man am Luftschlauch basteln. Aber das liegt nicht an den Brustaufsätzen sondern an den Schläuchen der Swing Maxi. Gutes Produkt!
Melissa –
Easy to clean!
Valentina –
Ottime adattabili fanno il loro lavoro compatibili come le originali . Consigliatissime anche il prezzo rispetto alle originali. Io suggerisco L acquisto
S91 –
Ik heb de borstschilden steeds netjes gereinigd en gesteriliseerd (uitgekookt) volgens de voorschriften. Echter is de vacuüm nu al niet meer werkend in combinatie met de Medela handkolf. Daarnaast is het stukje waar de Medela handkolf vacuüm op geplaatst moet worden, niet passend dus kun je van deze hele set slechts de borstschilden gebruiken (maar 3x in mijn geval). Niet aan te bevelen in combinatie met de handkolf van Medela dus!
Ansley Acee –
Easy to figure out how to attach to put parts together and connect to medela pump. All attachment parts are sterilizable too, however you may need a smaller brush to scrub inside of the valve for proper cleaning.