--- product_id: 1614510 title: "21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom" brand: "maymom" price: "B/.45" currency: PAB in_stock: true reviews_count: 13 category: "Maymom" url: https://www.desertcart.com.pa/products/1614510-21-mm-2xone-piece-small-breastshield-w-valve-and-membrane store_origin: PA region: Panama --- # 21 mm precision fit BPA/DEHP-free & steam sterilizable FDA-registered medical device 21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom **Brand:** maymom **Price:** B/.45 **Availability:** βœ… In Stock ## Summary > πŸ‘©β€πŸΌ Upgrade your pump game with precision and safety! ## Quick Answers - **What is this?** 21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom by maymom - **How much does it cost?** B/.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/1614510-21-mm-2xone-piece-small-breastshield-w-valve-and-membrane) ## Best For - maymom enthusiasts ## Why This Product - Trusted maymom brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Hygienic & Safe:** FDA-registered and compliant with EU standards, crafted from BPA/DEHP-free materials for peace of mind. - β€’ **All-in-One Design:** One-piece flange and connector reduce assembly hassle and potential leaks, streamlining your pumping routine. - β€’ **Universal Compatibility:** Works seamlessly with almost all Medela pumps except select models, making it a versatile replacement accessory. - β€’ **Complete Replacement Kit:** Includes 2 breastshields, 2 valves, and 4 membranesβ€”everything you need to maintain peak pump performance. - β€’ **Precision Fit for Comfort:** 21 mm one-piece breastshield designed for nipple diameters 19-20 mm post-pumping ensures optimal suction and comfort. ## Overview The Maymom 21 mm one-piece breastshield replacement kit is a medically certified, BPA-free accessory compatible with most Medela breast pumps. Designed for mothers with 19-20 mm nipple diameters after pumping, it offers a hygienic, easy-to-use, and reliable solution to enhance comfort and efficiency during breastfeeding. ## Description desertcart.com : 21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom : Breast Shells : Baby Review: superior to the medela flanges, size is perfect for me - I have been using the standard medley pump flanges for a few years with my first son and now with my second. I used to get bruises and have lots of pain when I used these... I didn't know the flanges came in other sizes. I know I have very small nipples and I didn't realize that the pump was actually taking in tissue it wasn't supposed to suck in. I honestly just thought to look into alternative pump flanges a month after my second son was born and I did it because the end of the areola and nipple never felt drained, when I self expressed, I always got another let down and it was back on with the pump flange. So I decided to get the smallest flange out there and I am so glad I did! these 19mm openings produce more let downs, my nipples aren't misshapen afterward and they no longer bruise or hurt. I think the design is similar but improved upon the original flanges in a way that minimizes spray in the vertical chamber which reduces waste...for those of us who try to recover every last drop. The perfect way the milk falls from its intended port into the second chamber is so much more direct and as the design has intended it compared to the other flanges. I don't like 2 things, the opacity of the thicker plastic nipple chamber makes visibility difficult. I use compressions in conjunction with each let down and in between them so I do watch for visual confirmation in the chamber. However, the thickness of the chamber surrounding plastic is an improvement over the other flanges...I actually have a crack in one of the first flanges I used in the chamber which could have soon spread and compromised its suction. The overall construction of these flanges is superior and improved. Everything fits very snugly where parts are meant to be attached. The second thing I don't like is that these flanges are smaller and aren't as secure in my hands free pumping bra with round holes (not the type with overlapping material) as the larger, original flanges...the holes in the bra are somewhat stretched and if I compress during pumping, the bottom of the flanges can pop out of the hole. This too has an upside...i am able to compress more breast tissue without the larger perimeter of the other flanges...so I can just get another bra or modify this one. And, the diameter, of course, is perfect for me. I think this company has made a superior product both in design and function...they offer a size medley does not and it's exactly what I needed. It's a well priced product...they seem well worth the price and I would have paid more for these after knowing what I know about them now. I highly recommend trying a smaller flange if you experience bruising or have build up of milk in your nipple that isn't adequately removed while pumping. Review: Thank God for the Smaller Sizes! - I want to thank the founding dads of Maymom for recognizing that women's nipples come in wider ranges of shapes and sizes. The smallest flange size Medela has is 21mm. My bra size was 32A pre-pregnancy and now it is 32B (sometimes 32C) while breastfeeding. I thought my nipples were average for my breast size, but apparently I needed an X-Small flange. I ordered two sets of 15mm and my milk output has increased and pumping is so much more comfortable! Many pumping moms don't know that you should actually go down in flange sizes to reduce discomfort and increase milk output. I learned this from my lactation consultant, but not all lactation consultants know to give this advice. Always err on the smaller flange size. I guarantee you'll notice a difference! Almost every woman has to go down a size or sizes as she continues pumping because the elasticity of your nipple changes. I like that Maymom breast flanges come in one piece so you never have to worry about the connector coming loose during your pump session and milk spilling everywhere! I don't have any problems cleaning the one piece. I use mild dish soap and let super hot water run through it. I use the brush that's included with the flanges for a deeper clean. I have a Papablic sterilizer so I pop the flanges in the bottom compartment and the valves in the upper compartment. It's really nice that the pack comes with extra valves and membranes. It's a good value. It's a pain to get these flanges in the Medela hands-free pumping bra as you have to back it in, but if you have the Simple Wishes bra, it makes getting these guys in a lot easier!! The Simple Wishes pumping bra is a MUST HAVE to go along with the Maymom flanges. ## Features - Please print out a niple ruler from the photo and measure your niple diameters before making the purchase. One size will not fit all. Incl. 2x One-Piece Breastshield ( 21 mm, suitable for mothers with niple diameters 19-20 mm AFTER pumping) , 2 Valves, 4 Membranes; Compatible with all Medela pumps (Pump in style, Lactina, Symphony, Swing, Mini Electric) EXCEPT FreeStyle, Swing Maxi, Sonata, Pump in style with maxflow Pro Pro+, Harmony (the manual pump). - 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; - This is ONE-piece design meaning the bottle connector and the flange is ONE piece. If you are looking for the original kind of design (two-piece form), please look up ASIN B07WLZGYJP - Made of Bisphenol-A (BPA)/DEHP-free material and all components are steam safe for sterilization. Retail poly-bag packed; sealed by the manufacturer - Maymom, not original Medela parts - Available in various sizes (13, 15, 17, 19, 21, 24, 25, 26, 27, 29, 30, 36 mm) for purchase. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00FK599DE | | Best Sellers Rank | #18,890 in Baby ( See Top 100 in Baby ) #920 in Breastfeeding Supplies | | Brand | Maymom | | Brand Name | Maymom | | Color | Non-detachable Clear | | Customer Reviews | 4.4 out of 5 stars 6,768 Reviews | | Included Components | Breast Flange | | Item Weight | 1.28 ounces | | Manufacturer | Maymom | | Manufacturer Part Number | M012-sFV2Mx2 | | Material | Plastic, Silicone | | Material Type | Plastic, Silicone | | Model Number | M001-2LF2V4M | | Number of Items | 1 | | Product Style | 21 mm | | Size | 21 mm | | UPC | 885155834591 738435627553 | | Unit Count | 1 Count | ## Product Details - **Brand:** Maymom - **Color:** Non-detachable Clear - **Included Components:** Breast Flange - **Material:** Plastic, Silicone - **Number of Items:** 1 ## Images ![21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Image 1](https://m.media-amazon.com/images/I/61gkgGAcHZL.jpg) ![21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Image 2](https://m.media-amazon.com/images/I/81V70JMk37L.jpg) ![21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Image 3](https://m.media-amazon.com/images/I/61fWbvJ4fyL.jpg) ![21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Image 4](https://m.media-amazon.com/images/I/81R9Jc2ol4L.jpg) ![21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Image 5](https://m.media-amazon.com/images/I/6161Ckxe8ZL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Does it come with 2 sheilds** A: Yes, there are 2 shields. **Q: compatible with pump in style advanced?** A: Yes, I'm using them with my pump in style advanced pump, actually, as I type this ο˜‚ Haha **Q: Do the yellow Medela brand valves and Medela white membranes also fit this product?** A: So far all of my Medela products have been fitting perfectly with these. Valves and membranes included! **Q: Does it state anywhere on the breastshield that the size is 25mm? I use different sizes for each breast so I need to know which is which** A: Yes it does! I use multiple sizes so I depend on that as well :) ## Customer Reviews ### ⭐⭐⭐⭐⭐ superior to the medela flanges, size is perfect for me *by D***M on September 28, 2014* I have been using the standard medley pump flanges for a few years with my first son and now with my second. I used to get bruises and have lots of pain when I used these... I didn't know the flanges came in other sizes. I know I have very small nipples and I didn't realize that the pump was actually taking in tissue it wasn't supposed to suck in. I honestly just thought to look into alternative pump flanges a month after my second son was born and I did it because the end of the areola and nipple never felt drained, when I self expressed, I always got another let down and it was back on with the pump flange. So I decided to get the smallest flange out there and I am so glad I did! these 19mm openings produce more let downs, my nipples aren't misshapen afterward and they no longer bruise or hurt. I think the design is similar but improved upon the original flanges in a way that minimizes spray in the vertical chamber which reduces waste...for those of us who try to recover every last drop. The perfect way the milk falls from its intended port into the second chamber is so much more direct and as the design has intended it compared to the other flanges. I don't like 2 things, the opacity of the thicker plastic nipple chamber makes visibility difficult. I use compressions in conjunction with each let down and in between them so I do watch for visual confirmation in the chamber. However, the thickness of the chamber surrounding plastic is an improvement over the other flanges...I actually have a crack in one of the first flanges I used in the chamber which could have soon spread and compromised its suction. The overall construction of these flanges is superior and improved. Everything fits very snugly where parts are meant to be attached. The second thing I don't like is that these flanges are smaller and aren't as secure in my hands free pumping bra with round holes (not the type with overlapping material) as the larger, original flanges...the holes in the bra are somewhat stretched and if I compress during pumping, the bottom of the flanges can pop out of the hole. This too has an upside...i am able to compress more breast tissue without the larger perimeter of the other flanges...so I can just get another bra or modify this one. And, the diameter, of course, is perfect for me. I think this company has made a superior product both in design and function...they offer a size medley does not and it's exactly what I needed. It's a well priced product...they seem well worth the price and I would have paid more for these after knowing what I know about them now. I highly recommend trying a smaller flange if you experience bruising or have build up of milk in your nipple that isn't adequately removed while pumping. ### ⭐⭐⭐⭐⭐ Thank God for the Smaller Sizes! *by I***K on March 25, 2019* I want to thank the founding dads of Maymom for recognizing that women's nipples come in wider ranges of shapes and sizes. The smallest flange size Medela has is 21mm. My bra size was 32A pre-pregnancy and now it is 32B (sometimes 32C) while breastfeeding. I thought my nipples were average for my breast size, but apparently I needed an X-Small flange. I ordered two sets of 15mm and my milk output has increased and pumping is so much more comfortable! Many pumping moms don't know that you should actually go down in flange sizes to reduce discomfort and increase milk output. I learned this from my lactation consultant, but not all lactation consultants know to give this advice. Always err on the smaller flange size. I guarantee you'll notice a difference! Almost every woman has to go down a size or sizes as she continues pumping because the elasticity of your nipple changes. I like that Maymom breast flanges come in one piece so you never have to worry about the connector coming loose during your pump session and milk spilling everywhere! I don't have any problems cleaning the one piece. I use mild dish soap and let super hot water run through it. I use the brush that's included with the flanges for a deeper clean. I have a Papablic sterilizer so I pop the flanges in the bottom compartment and the valves in the upper compartment. It's really nice that the pack comes with extra valves and membranes. It's a good value. It's a pain to get these flanges in the Medela hands-free pumping bra as you have to back it in, but if you have the Simple Wishes bra, it makes getting these guys in a lot easier!! The Simple Wishes pumping bra is a MUST HAVE to go along with the Maymom flanges. ### ⭐⭐⭐⭐⭐ Didn't work well for me but might for you *by L***A on September 8, 2020* They were compatible with my medela pump no problem. The one piece aspect wasn't bad. This is my fourth child I'm nursing and pumping so I'm not new, went 18months with the first three. I ordered these as they were much cheaper then medela and I was having to rebuy everything after giving it all away thinking we were done having baby's. Anyways. First use and milk goes in the tube, happens occasionally but after the third time with the same shield, something is wrong with that one. I notice that sometimes I pump and feel great and get a lot of milk, other times I'm struggling and on the machine longer and I'm not as empty still. The tube that pulls the nipple in is much shorter and my nipple goes too far and I get a poor pump. My medela and these other off brand, nenesupply, are longer and don't pull my nipple all the way to the back so I get a good pump and empty nicely. I'm a larger bust with a nipple about as big around as my thumb, so maybe only a busty girl problem? I dunno. But other then that issue the suction was nice and strong, easy to clean yadda yadda good stuff to say. Just for me if I can't get a good empty when I pump I start to get sore and my breasts harden and get tender and I'll get cloggs so these don't work for me. ## Frequently Bought Together - 21 mm 2xOne-Piece Small Breastshield w/ Valve and Membrane for Medela Breast Pumps; Replacement to Medela PersonalFit 21 Breastshield and Personal Fit Connector; Made by Maymom - Medela Breast Milk Collection and Storage Bottles, BPA Free, 6 Pack, 5 Ounces, Compatible with Medela Breast Pumps - Replacement Tubing (1 Retail Pack of 2 Tubes) Compatible with Medela Pump in Style and New Pump in Style Advanced Breast Pump - 100% BPA Free (One Pack) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/1614510-21-mm-2xone-piece-small-breastshield-w-valve-and-membrane](https://www.desertcart.com.pa/products/1614510-21-mm-2xone-piece-small-breastshield-w-valve-and-membrane) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-10-25*