Willow® Universal Breast Pump Sizing Inserts 19mm (2-Pack)
Willow® Universal Breast Pump Sizing Inserts 19mm (2-Pack)
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Willow® Universal Breast Pump Sizing Inserts 19mm (2-Pack)

Willow® Universal Breast Pump Sizing Inserts 19mm (2-Pack)Willow Universal Breast Pump Sizing Inserts 19mm 2 PackWillow Universal Breast Pump Sizing Inserts 17mm 2 PackWillow Universal Breast Pump Sizing Inserts 15mm 2 Pack
Size:19 mm

Key item features

Sizing Inserts make pumping more comfortable for mothers with smaller flange sizes Improves fit and comfort for moms who need a flange size smaller than 21mm Flexible silicone material for a snug, secure fit Fits into Willow 3.0 and Willow Go 24mm Flanges and Containers only (sold separately) Nipple Measurements: 11-13mm nipple use Insert Size 15mm; 13-15mm nipple use Insert Size 17mm; 15-17mm nipple use Insert Size 19mm Easy to assemble and clean 2 pack Dishwasher safe Not made with BPA
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3.756962025316456 stars out of 5, based on 395 seller reviews(3.8)
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About this item

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Customer ratings & reviews

4.3 out of 5 stars
stars737 ratings573 reviews
How item rating is calculated
  1. 5 stars74% (545)
  2. 4 stars7% (49)
  3. 3 stars5% (34)
  4. 2 stars4% (29)
  5. 1 star11% (80)

Reviews summary

Pros

  • : Most users find the product straightforward to navigate.
  • : Increases milk production and emptying efficiency.
  • : Fit securely into various flange sizes.
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Showing 1-3 of 573 reviews

Apr 15, 2026
Meagan R.
5 out of 5 stars review

Seller Verified Purchase

I really recommend getting these inserts. You can select your size and get multiples. It comes with 24mm and then 21mm inserts, which most of us girlies are not that size. Worth the money!

Incentivized Review
Review from http://onewillow.com
Helpful?2RA5APV8C6FB1075351492
Apr 17, 2026
Ara K.
5 out of 5 stars review

Seller Verified Purchase

These inserts are much more comfortable than the standard silicone inserts I've used before. The quality of them are great and they fit snugly in the flanges of the Willow.

Incentivized Review
Review from http://onewillow.com
Helpful?2RA5APV8C6FB1075351492
Dec 30, 2025
Eden R.
5 out of 5 stars review

Seller Verified Purchase

I love these inserts!!!! I have tried multiple other brands and these are so soft and very easy to clean. Plus the cute flower pattern is a nice touch. I would buy these again.

Incentivized Review
Review from http://onewillow.com
Helpful?2RA5APV8C6FB1075351492