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 (meaning shield and bottle are fused together, not removable) of...

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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 (meaning shield and bottle are fused together, not removable) offers easy to clean, fewer pieces to keep, and no seams to lose suction power.

Medela offers 27 mm breastshield only in the two-pieces form. Maymom is the first company world-wide to offer 19, 21, 25, 27, 29, 30, 34 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, Pump in Style, Lactina, Symphony, Swing 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 ( 27mm, suitable for mothers with niple diameters 25-26mm 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, Harmony.
  • 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.
  • 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 ( 27mm, suitable for mothers with niple diameters 25-26mm 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, Harmony.
  • 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.

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