It is well known that using the correct breastshield size is important for your pumping comfort and optimal milk supply. It is also known that one-piece design offers easy to clean, fewer pieces to keep, and no seams to lose...

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It is well known that using the correct breastshield size is important for your pumping comfort and optimal milk supply. It is also known that one-piece design offers easy to clean, fewer pieces to keep, and no seams to lose suction power. Medela offers 21 mm breastshield only in the two-pieces form.

Maymom is the first company world-wide to offer 19, 21, 25, 26, 27, 29, 30 and 36 mm internal diameter one-piece design breastshields to fit Medela users' personal pumping needs.

The valve/membrane in this set are interchangeable with your existing Medela parts. Maymom has 4 years experience in making breast pump parts. 100% compatibility is guaranteed or your money back!

Disclaimer: Medela, Freestyle, Lactina, Symphony, Swing-maxi and Pump in style are registered trademarks of Medela Holding AG. Maymom is not affiliated with Medela nor does Medela endorse the product.



  • 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.
  • 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.

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