Rated 4.1 out of 5
Based on 151 reviews

Willow® Sizing Insert Set
(2-pack)

$19.99

Designed for the perfect fit and performance with Willow, sizing inserts make pumping more comfortable for mamas with smaller flange sizes.


Select a size
What's my size?
  • 13mm
  • 15mm
  • 17mm
  • 19mm
  • 21mm
Free shipping on orders over $70

2 ways to pays with

Insurance & HSA/FSA

  • FSA/HSA reimbursements eligible

Find Your Fi

Find Your Fit

average rating 4.1 out of 5
Based on 151 reviews
  • 5 Stars
    98 Reviews
  • 4 Stars
    12 Reviews
  • 3 Stars
    12 Reviews
  • 2 Stars
    11 Reviews
  • 1 Star
    18 Reviews
74% of reviewers would recommend this product to a friend
Customer photos and videos
151 Reviews
Reviewed by Melissa C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Perfect

These worked out perfect to help me size down

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Reviewed by Cyn C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Thankful for the recommendation

I’m thankful that the customer service rep pointed me to not only the flanges but the correct sizing. Thank you!

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Willow Pump

We appreciate the feedback, Cyn! Thank you for taking the time to review our Sizing Inserts! We are so pleased that you have found comfort while pumping. If you ever need assistance, don't hesitate to reach out! https://onewillow.com/contact/

Reviewed by Chelsea E.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Inserts

These are comfortable and work great! Its very important to get your flange size right.

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Reviewed by Julia P.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

More comfortable!

These make pumping much more comfortable.

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Reviewed by MaeLynne L.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Great addition!

These inserts fit snugly into the flanges, and are comfortable to where I don't even notice them. My elastic nips are no longer an issue with pumping, which is fantastic!

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