Rated 4.0 out of 5
Based on 131 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

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Insurance & HSA/FSA

  • FSA/HSA reimbursements eligible

average rating 4.0 out of 5
Based on 131 reviews
  • 5 Stars
    81 Reviews
  • 4 Stars
    11 Reviews
  • 3 Stars
    11 Reviews
  • 2 Stars
    11 Reviews
  • 1 Star
    17 Reviews
72% of reviewers would recommend this product to a friend
Customer photos and videos
131 Reviews
Reviewed by Layne U.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Fit in easily, soft and comfortable.

These are softer than other inserts I've used, and the scalloped edge is very comfortable.

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Reviewed by Elena R.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

LOVE

LOVE, super easy to use

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Reviewed by Haley A.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Very Comfortable

These are the most comfortable inserts I’ve used. I only wish there was a size between 19mm and the 21mm flange. I think I’m JUST in between. The product is great, though.

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Reviewed by Jenifer K.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Wish I had these with my first baby!

Awesome! They work with my other pump too and now pumping is much more comfortable!

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

A Life Saver!!

I never leave reviews but I had to with this. I originally HATED the whole system. I worked with three lactation consultants who sized me incorrectly. Pumping was so painful and I wanted to give up. I spent so much money I didn’t know what to do. So I contacted customer service and they assisted me in getting the proper sizing and started using this gem. Pumping is so perfect now. I couldn’t have continued without it.

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