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Welcome to Avari’s Fit Finder

Let’s find the perfect flange size for your pumping journey. It only takes a minute.

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What to Measure

Before we recommend a size, we need to measure the diameter of your nipple—right at the base, where it meets the areola (the darker skin around your nipple).

Tip: For the most accurate measurement, wait at least 30 minutes after pumping or breastfeeding, as your nipple size may temporarily change.

Next: We’ll show you how to measure it.

Measurement guide
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How to Measure

To find your perfect fit, you’ll need to measure your nipple diameter — remember, each breast may require a different size.

What you’ll need:

  • A soft measuring tape or ruler
  • A mirror or phone camera for visibility

How to measure:

  1. Gently stimulate your nipple so it stands upright.
  2. Using a ruler or measuring tape, measure your nipple’s diameter (in mm) from base to base. Do not include the areola. Measure both nipples separately, as sizes may vary.
  3. Your measurement is where the base of your nipple is widest. Repeat this step for your other nipple.
Hwo To Measure
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Enter Your Measurement

What is your nipple diameter (in mm)?


Noticed two different measurements?
That’s completely normal. You can proceed with one side for now, then repeat the process for your other side after this step.

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Your Recommendation