What is the standard breast shield size?

24mm
The standard size is 24mm, but you may need a larger size. Use our Nipple Measurement tool to determine the diameter or the width across the base of your nipple. Do not include the areola or outer edge.

How do I choose the right size flange?

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.

Is my breast pump shield too small?

Determining if You Need a New Breast Shield Size You have redness on or at the base of the nipple during and/or after pumping. Your nipples or areola are turning white during and/or after pumping. Your breasts still feel full after pumping.

What size breast shield comes with Medela pump?

24 mm
The 24 mm breast shield is the standard shield that comes with Medela breast pumps. However, nipple size can vary and some women benefit from a size other than the 24 mm.

Is my breast pump flange the right size?

Be sure to measure the diameter of the nipple alone—do not include the areola. When you get your pump, you can tell that the flange is a proper fit if: You are not experiencing pain in your nipple. Your areola should have little or no tissue inside the tunnel of the breast pump.

What happens if my flange is too big?

If your breast pump flange is too big you may experience: Your areola could become pulled into the flange and tunnel. Painful nipple pinching, pulling, and squeezing. Lower breast milk production. Your nipple or areola could become white or discolored.

What if flange is too small?

Flanges that are too small may cause excess friction, pinching, or squeezing as the nipple is pulled against it. As a result, your nipple or areola could become white or discolored, and you could experience low milk supply or painful milk extraction.