Maymom Membrane for Medela Maymom Valve

Maymom membranes is to be used with Medela's Pump-in-Style, Pump-in-Style-Advanced, Lactina, Symphony, Swing or other Medela pumps except Freestyle, Swing-Maxi, Sonata and Freestyle Flex.
What we like:
  • Membranes are more flexible than the OEM membranes to respond faster to the pressure change during pumping
  • This part is made to replace Medela's part# 87088 specifications. 100% compatible.
  • More affordable than original brand
Work with:
  • Medela Valve for PIS, PISA, Lactina, Symphony, Swing except Freestyle, Swing-Maxi, Sonata and Freestyle Flex breast pump.
  • Made by Maymom

What's included per pack:

  •  8 x membranes


  •  Safe in Medela Micro Steam Bag
  • Can be sterilised in water steam or boiling water
  • Parts are manufactured using BPA free PP materials and are tested by laboratories

A breast shield or flange is the funnel on a breast pump that attaches to your breast and draws the nipple out, creating suction and allowing your milk to flow out of your breasts and into the storage bottle. Some breast shields, the funnel and the bottle connector are joined seamlessly as a one-piece, known as the flange.

The size of the breast shield is express in terms of millimeters (mm). This usually refer to the measurement of the opening at end of the funnel towards the tunnel.  

Finding the Right Fit: 

In order to find your optimal breast shield size, you can measure your nipple diameter:

  1. Using a ruler or measuring tape, measure the diameter of your nipple at the base (across the middle, diameter) in millimetres (mm). Do not include your areola.
  2. Add 2 to 4 mm to your measurement when selecting your breast shield size.

If you have already started pumping, please measure after a pumping session.

You can also download this ruler, print and cut out the ruler to measure your nipple diameter.

Am I using the correct breast shield size?

If you answer yes to one or more of the following questions, you may be using the incorrect breastshield size.

- Do you feel discomfort when pumping?

- Does your nipple rub against the side of the flange?

- Do you see excess areola pulled into the flange?

- Do you see any redness of whiteness?

- Do you feel unexpressed breast milk after pumping?

A good fitting breast shield should give you a gentle, rhythmic pulling during expressing, and your breast should feel empty and soft once you’re finished. Pumping breast milk should never be a painful experience.

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