Finding the proper size for a breast flange is based on the diameter of the nipple, not the areola (the softer pigmented skin around the nipple). When your nipple is centered inside the flange tunnel, it should only have a few millimeters (3-5) of wiggle room around the nipple.

How do I know which flange to use?

To determine the best flange size for you, you'll need to measure your nipple. Take a tape measure or ruler and measure the diameter, or width across, of your nipple in millimeters. Do not include measurements for your areola, the larger part around your nipple. Select your flange size based on your measurement.

What flange is compatible with Spectra?

All Spectra pumps come standard with 24mm and 28mm flanges, and now you can purchase additional size flanges separately on their website.