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Maymom Wide Mouth One-Piece Breastshield Only For Spectra, 1pc (3 Sizes)

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Product Description


  • Compatible with all Spectra pumps (S1/S2/M/9+) and older Spectra breastpumps (Dew 350, 360)

  • Compatible with all Medela pumps except Sonata, Swing Single, Swing Maxi, FreeStyle, Harmony and Pump in Style

  • Connects directly to Spectra backflow protector; no need for yellow flange adaptor!

  • Pumps into wide-neck milk bottles ONLY (e.g. Spectra Bottles, Philip Avent, etc)

  • Flange and connector in one

  • Made from BPA free PP material.

  • Steam safe, autoclaveable.

  • One piece for easy cleaning.

  • US FDA compliance


Product contains: 1 x Wide-neck Breastshield

This product is made by Maymom to fit spectra pumps. It is known that using the correct size of flange (breastshield) in breastpumping is the most important factor in achieving comfort and efficiency. Every mother was created differently. One or two sizes can’t fit all. This is why Maymom develops more than 12 sizes of flanges spanning from 13 mm up to 36 mm to fit the average mothers and those mothers who need special sizes (e.g. 13, 15, 17, 36 mm). Measure your nipple diameter first, and then use the size selector of this listing to choose the size that is 1-2 mm larger than your nipple diameter AFTER a pumping session.


  • One-piece design; easy to clean, less piece to keep, and less chance for suction power loss.

  • All components are safe for steam sterilization, microwave sterilized or sterilized in boiling water.

  • Compatible with all Medela pumps except Sonata, FreeStyle, Swing Maxi and Harmony.

  • US FDA registered medical device; Comply with US FDA standards for containers that contact food and class II medical device.

  • Standard sized 25 mm inner diameter is most comfortable for the majority of breast feeding moms. However, other sizes are available too.


There are improvements of this flange over the original spectra design

  1. In addition to spectra’s duckbills, you can use Maymom’s valve/membrane system with this Maymom flange. You can also try other brands of duckbills/valve/membrane on this flange. The chances are that they will fit.

  2. In additional to fitting Spectra’s backflow protector, you can use Maymom’s long stem, as well as short stem backflow protectors. You can also use Maymom’s tubing connector (sold separately) to connect this flange to many other popular breastpumps on the market.


How to choose the right size of breastshields for you?


The inner diameter of the breastshield (B) should be 1-2 mm larger than the diameter of your nipple (N). AFTER a pumping session or 3-5 mm BEFORE a pumping session.  You should be able to see free movement of your nipple during pumping and there should be little or no suction of the areola into the tunnel of the breastshield.





When it comes to pumping comfort, every millimeter counts.  That is why we design a series of breastshields of small increment sizes.  Maymom MyFitTM one-piece breastshields are available in 15 (XXS-), 17 (XXS), 19 (S-), 21 (S), 24 (M), 25 (M+), 26 (L-), 27 (L), 29 (XL-), 30 (XL), 34 (XXL-), and 36mm internal diameters plus 22 mm and 28 mm inserts to fit the majority of breast pumping mothers




How to measure the diameter your nipple?


Download the nipple caliper file, print it out, cut through the red line, fold along the green dots then you have made yourself a nipple diameter measuring tool!  See below for the finished ruler.





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Product Reviews

  1. Good fit for Spectra S1 5 Star Review

    Posted by on 30th Nov 2020

    Good fit for Spectra S1

  2. Great! 5 Star Review

    Posted by on 3rd Aug 2019

    Fits my spectra pump very well.