---
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: "19518CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Maymom"
url: https://www.desertcart.sn/products/1614510-21-mm-2xone-piece-small-breastshield-w-valve-and-membrane
store_origin: SN
region: Senegal
---

# 21 mm precision fit One-piece seamless design BPA & DEHP-free safe materials 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:** 19518CFA
**Availability:** ✅ In Stock

## Summary

> ✨ Pump Smarter, Not Harder — Comfort Meets Efficiency! 🍼

## 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?** 19518CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/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

- • **Boost Your Milk Supply:** Optimized fit reduces duct blockage, increasing milk output by up to 1 oz per session.
- • **FDA-Registered & Tested:** US FDA registered medical device with compliance to US and EU safety standards for peace of mind.
- • **Universal Compatibility:** Works flawlessly with all Medela pumps except select models, ensuring versatile use.
- • **Seamless One-Piece Design:** Integrated flange and connector for easier cleaning and hassle-free assembly.
- • **Perfect Fit, Maximum Comfort:** 21 mm size tailored for nipple diameters 19-20 mm post-pumping to eliminate pain and bruising.

## Overview

The Maymom 21 mm One-Piece Breastshield is a precision-engineered replacement for Medela PersonalFit 21 mm shields, crafted from BPA-free materials and FDA-registered for safety. Designed to fit nipple diameters of 19-20 mm after pumping, its seamless one-piece design enhances comfort, reduces pain, and boosts milk supply. Compatible with most Medela pumps, this accessory transforms your pumping experience with superior fit and hygiene.

## 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: 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!
Review: 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 desertcart 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.

## 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 |
| ASIN  | B00FK599DE |
| Best Sellers Rank | #13,501 in Baby ( See Top 100 in Baby ) #625 in Breastfeeding Supplies |
| Brand Name | Maymom |
| Color | Non-detachable Clear |
| Customer Reviews | 4.4 4.4 out of 5 stars (6,801) |
| Date First Available  | April 22, 2013 |
| Included Components | Breast Flange |
| Is Discontinued By Manufacturer  | No |
| Is the item dishwasher safe? | No |
| Item Weight | 1.28 ounces |
| Item model number  | M001-2LF2V4M |
| Manufacturer | Maymom |
| Manufacturer  | Maymom |
| Manufacturer Part Number | M012-sFV2Mx2 |
| Manufacturer recommended age  | 0 - 3 years |
| Material Type | Plastic, Silicone |
| Model Number | M001-2LF2V4M |
| Number of Items | 1 |
| Product Dimensions  | 4.33 x 3.54 x 4.33 inches; 1.28 ounces |
| Product Style | 21 mm |
| Size | 21 mm |
| UPC | 885155834591 738435627553 |
| Unit Count | 2 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)

## 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  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

### ⭐⭐⭐⭐⭐ Finally a fit, and a Quality Made Product
*by R***I on February 19, 2014*

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!

### ⭐⭐⭐⭐⭐ Highly recommend! Fits madela Instyle pump parts perfectly
*by M***3 on January 23, 2017*

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.

### ⭐⭐⭐⭐⭐ 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.

## 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)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-05-31*