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Willow 360™ Flange Set (2-pack)
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HSA/FSA
Willow 360™ Flange Set (2-pack)

Willow 360™ Flange Set (2-pack)

$29.99 $20.99
Our flanges come in three sizes and are compatible with sizing inserts to give you optimal output
4.0 (110)
21mmwhat’s my size?

Find your flange fit. Pump with confidence.

When it comes to wearables, sizing is different — you'll need a fit that's more snug. Most moms find that adding 1-3mm to their nipple size (or 0-2mm if you're pumping with Willow 360) results in optimal output and comfort.

Still need your nipple measurements? Try our sizing guide

Measured Nipple Size

 Willow Recommended Size Flange / Insert
9-11mm 13mm insert in 24mm flange
12-13mm 15mm insert in 24mm flange
14-15mm 17mm insert in 24mm flange
16-17mm 19mm insert in 24mm flange
18-20mm 21mm flange
21-23mm 24mm flange
24-26mm 27mm flange

Sizing inserts can only be used with a 24mm flange or 24mm container insert.

Questions? Our experts can help.
1-888-WILLOW-3

How To Find Your Nipple Size

Step 1: Get a measuring tape

Measure the diameter of your nipple at its base while erect to determine its size accurately.

Step 2: consider sizing up

Most moms find that adding 1-3mm to their nipple size results in optimal output and comfort.

Step 3: take a look at our chart

Match your measurements to our sizing chart to find your recommended size flange / insert.

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Willow 360™ Flange Set (2-pack)

$29.99$20.99

Replacing Your Parts

For optimal output, replace every 90 days (or when you notice discomfort or signs of wear).

Frequently Asked Questions

View Our Help Center
Total 5 star reviews: 57 Total 4 star reviews: 26 Total 3 star reviews: 10 Total 2 star reviews: 3 Total 1 star reviews: 14
4.0
Rated 4.0 out of 5 stars
Based on 110 reviews
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110 reviews
  • Chantel K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    53 minutes ago
    No complaints

    Moves the milk well and easy to clean. I wish you could order the correct flange size vs using inserts from the start. I get better volume without having to use the extra piece.

    Was this helpful?
  • Arianna S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Flange

    Great pump and accessories. So easy to pump directly in bags!

    Was this helpful?
  • Shijin E J.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Love it !!

    Love them !! Love that they have different sizes now and inserts which allowed me to be completely emptied and produce more milk for my little one

    Was this helpful?
  • Erica B.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    2 weeks ago
    Closed system

    I prefer closed system pumping with my profession due to biohazards I deal with. You have to replace them about every 6 months due to normal wear and tear but it’s a great (but expensive) option to pouring milk into canisters.

    Was this helpful?
  • Amy M.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Great to have extras

    I love love pumping with the bags and this is a necessary part for that. I have extra and prep them with the flex tube and bag in advance to make pumping on the go much easier and faster.

    Was this helpful?
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