Average Flange Size For Breast Pump In 2023

Flange size Breastfeeding Resources Pinterest
Flange size Breastfeeding Resources Pinterest from pinterest.com

Understanding the Importance of Flange Size for Breast Pumping

When it comes to breast pumping, finding the right flange size is crucial for comfort and optimal milk expression. The flange is the funnel-shaped part that fits over the breast and nipple during pumping. Using the wrong flange size can lead to discomfort, decreased milk supply, and even nipple damage. In 2023, it is essential to understand the average flange size for breast pumps to ensure a successful pumping journey.

What is the Average Flange Size?

The average flange size for breast pumps in 2023 is typically around 24-27 mm. However, it is important to note that every woman’s breasts and nipples are unique, and the average size may not be suitable for everyone. Some women may require larger or smaller flange sizes to accommodate their breast shape and size. It is crucial to measure and assess your own flange size to ensure a proper fit.

How to Determine Your Flange Size

Measuring your flange size is relatively simple and can be done at home. Start by placing a ruler or measuring tape against your nipple and measure the diameter of your nipple at its base. This measurement will give you a rough estimate of your flange size. However, keep in mind that flange fit is also influenced by breast tissue and nipple elasticity.

It is recommended to consult with a lactation consultant or breastfeeding specialist who can help you determine the correct flange size based on your nipple measurements and breast characteristics. They can guide you in finding the most comfortable and effective flange size for your pumping needs.

The Importance of a Proper Flange Fit

A proper flange fit is essential for comfortable and efficient breast pumping. Using the wrong flange size can lead to various issues, including:

1. Discomfort and Pain

If the flange is too small, it can cause nipple compression and pain. On the other hand, if the flange is too large, it may not create a proper seal, leading to discomfort and reduced milk expression. A proper fit ensures that the nipple moves freely within the flange during pumping.

2. Decreased Milk Supply

Using the wrong flange size can affect milk supply. A flange that is too small or too large may not effectively stimulate milk production, resulting in a decreased milk supply over time. Ensuring a proper fit can help maintain and even increase milk production.

3. Nipple Damage

Ill-fitting flanges can cause nipple trauma, such as cracks, blisters, or bleeding. This can be painful and may lead to difficulties in breastfeeding or pumping in the future. Using the right flange size minimizes the risk of nipple damage.

Tips for Finding the Right Flange Size

Here are some tips to help you find the right flange size for your breast pump:

1. Observe Your Nipple Movement

During pumping, your nipple should move freely within the flange. If it rubs against the sides or gets pulled too far into the tunnel, the flange may be too small. If there is excessive space around the nipple, the flange may be too large.

2. Pay Attention to Comfort

A properly fitted flange should be comfortable to wear during pumping. If you experience pain, discomfort, or suction loss, it may be an indication that you need to try a different flange size.

3. Seek Professional Guidance

If you are unsure about your flange size or experiencing difficulties with pumping, consult with a lactation consultant or breastfeeding specialist. They can provide personalized advice and support to help you find the right flange size.


Choosing the right flange size for your breast pump is crucial for comfortable and effective pumping. While the average flange size in 2023 is around 24-27 mm, it is important to remember that individual variations exist. By measuring your own flange size and seeking professional guidance if needed, you can ensure a successful and comfortable pumping experience.