Willow® Wearable Breast Pump

Generation 2.0
Rated 4.5 out of 5
144 Reviews

Generation 2.0

Willow changed the world of pumping in January 2018 with the first-ever, in-bra wearable pump. Generation 2.0 is even better, with a clear flange to help you align and get pumping faster.

Meet the all-in-one breast pump that fits in your bra and goes where you go. Our patented, no-spill technology lets you pump smarter and fully hands-free.

Flange Size Guide

Sizing Guide

Sizing Steps

  1. Stimulate your nipple so it’s erect.

  2. Hold a dime, nickel and quarter in front of your nipples to compare the diameter of the base of your nipples (not the areola) to each coin.

  3. Determine your flange size using the chart below.

    Size Guide

    If your nipple is:

    Smaller than a dime 21mm
    (Not Offered)
    Larger than a dime but smaller than a nickel 24mm
    Larger than a nickel but smaller than a quarter 27mm
    Ships Separately
    Larger than a quarter 30mm
    (Not Offered)

Free Shipping on all Pumps.
FSA/HSA reimbursement eligible.
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  • Everything works inside the Pump and inside your bra, with no external tubes, cords, or dangling bottles to hold you back.
  • Milk flows into the spill-proof Milk Bag inside the Pump.
  • Smart, proprietary technology responds to your body and maintains suction similar to a baby, enabling true mobility without spilling a drop.
  • Lie down, bend over, play with baby, take a conference call… pump wherever the day takes you!
  • The only wearable pump that is spill-proof in any position
  • Quiet for discreet pumping
  • Seven levels of suction are comparable to most traditional double electric and hospital grade pumps
  • Connects to the Willow App, for easy volume tracking, session history, and personalized pumping tips
  • Compatible with iOS (iPhone 5 and newer) and Android (supported models)
  • Only two parts to clean. Dishwasher safe
  • BPA free (all parts that come in contact with breastmilk)
  • Rechargeable battery lasts up to 5 pumping sessions to get you through the day
  • One year warranty from first use
  • 2 Willow Pumps
  • 2x 24mm Flanges (27mm Flanges Ship Separately)
  • 2 Flextubes™
  • 24 4 oz. Milk Bags
  • Charger
  • 2 Cleaning Brushes
  • 2 Carrying Bags
Do you offer financing?
Yes! We partner with Affirm to offer payment plans for the Willow Wearable Breast Pump. Learn more
Can I use my HSA/FSA?
Yes you can. Simply pay for your breast pump, milk bags, and accessories using your FSA/HSA debit card at checkout, or pay with another credit card and submit your receipt to your plan administrator for reimbursement.
Is Willow covered by insurance?
Some women are able to obtain full or partial reimbursement for their Willow Pump through insurance. We recommend you contact your insurance provider to see if they will cover some or all of the cost of the pump.
Does Willow work with larger breast sizes?
Yes. Willow was designed to work with larger breast sizes including G and H bra cups. See our Sizing Guide for fit.
Do I need a special bra for Willow?
We recommend wearing Willow with a full-coverage nursing bra that’s stretchy and has a flap. Avoid underwire and padded bras.
Do you offer 21 or 30 mm Flanges?
Not yet, but we want Willow to be accessible to as many women as possible. Our team is exploring offering more sizes in the future. Unsure of your size? Our Sizing Guide can help.
Can you ship Willow internationally?
Not at this time, but our goal is to get Willow into the hands of women around the world—so it’s something we hope to offer in the future.

Awards & Accolades

average rating 4.5 out of 5
Based on 144 reviews
  • 5 Stars
    91 Reviews
  • 4 Stars
    39 Reviews
  • 3 Stars
    8 Reviews
  • 2 Stars
    3 Reviews
  • 1 Star
    3 Reviews
92% of reviewers would recommend this product to a friend
144 Reviews
Rated 5 out of 5
Review posted

Life changing!

This pump is worth its weight in gold! There is nothing like being able to use your pumping time wisely, like pumping during my commute, doing the dishes, hold my baby, or even being able to sit next to my husband on the couch! Being stuck to the wall, holding the flanges to me, and having to pour milk from the collection bottle to the bag is something I will never miss. Thank you Willow!

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Rated 5 out of 5
Review posted


I love the willow. It allows me to be a mommy to my 3 children while I'm pumping. And a great employee at

Work. It is a bit pricey but worth it.

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Rated 5 out of 5
Review posted

Pumping made easy

What a world we live in where pumping is this simple. I travel a ton for work, both via car and plane, and the Willow pumps made my breastfeeding and pumping life so much easier!! A ready-to-freeze bag that stores relatively flat, pumps that connect to your phone to tell you how much milk you've pumped, and it is a hands-free/chord-free/hassle-free experience. I will also say that the pumps are very efficient. I can pump and be done often in 10-15 minutes where a regular pump would take way longer. Willow, I love you.

I am also a milk donor so it is super easy to raid my freezer stash of bags and ship them to the milk bank. No need for me to transfer milk from bottles to bags at all. The bag is ready to go.

This pump made breastfeeding and working a breeze. My baby is 15 months and still going strong. If I had too many parts to clean and all kinds of things to deal with I may have quit long ago. But Willow made it possible for me to keep breastfeeding as long as it works for us. I love it. Thank you Willow!!

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Rated 5 out of 5
Review posted

Without the willow I simply couldn’t

I love the willow! It helps me do so many things that I would otherwise not be able to do because I would be connected to a pump. This is hands free! No wires! U just align and go. It’s amazing to know that u can bend down and pick up your baby and continue to pump. This is perfect for moms who wish to multi task. I personally know it’s helped my pumping journey

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Rated 5 out of 5
Review posted

Best invention ever!

I am a mother of 2 under 2. My first experience with breastfeeding and pumping did not go as I had hoped. I hated having to sit by the wall for 20-30 minutes pumping. I felt like I was missing out on events and spending time with family. With the Willow, I have gained a sense of freedom while still providing my little nursing with breastmilk all while enjoying time with my little family. I can’t thank Willow enough for what this product has done for me!

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