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Willow 360™ Flange Set (2-pack)
HSA/FSA
25% OFF
Willow 360™ Flange Set (2-pack)

Willow 360™ Flange Set (2-pack)

$29.99
Our flanges come in three sizes and are compatible with sizing inserts to give you optimal output
3.9 (110)

Flash sale! Take 25% off with code DEC25

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.

Order by 12/14 with standard shipping to receive by 12/24

Insurance & HSA/FSA

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Free shipping on all orders over $69

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Willow 360™ Flange Set (2-pack)

$29.99

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: 59 Total 4 star reviews: 27 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 113 reviews
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113 reviews
  • Jia H.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    3 hours ago
    Great for on the go pumping

    I work in healthcare and I continue to explore better/more convenient options to pump at work. I will be using multiple sets of flange and flexi tube for easy assembly and pumping during my short breaks. After correctly sizing the flange, I’m happy with the output and the comfort of pumping.

    I initially ordered the 21mm but after reading reviews online, I realized that I needed to size down. Willow customer support was great and sent me a set of 24mm instead. So far I’m still getting the hang of using the Willow but with practice I think it will make my pumping journey much easier at work.

    Was this helpful?
  • Angela X.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    as advertised

    extremely easy to clean, attaches securely, no issues!

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  • Jacqueline M.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    2 weeks ago
    Does the job

    I pump daily and use these often. I like the convenience of having bags that self seal, and it’s easy cleanup. I buy a new set about once every three months. I do sometimes worry the top of the flange where the bag attaches might break if I’m not careful.

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  • Chantel K.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 month 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.

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  • Arianna S.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Flange

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

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