Willow® Wearable Breast Pump

Generation 2.0
Rated 4.5 out of 5
83 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 83 reviews
  • 5 Stars
    57 Reviews
  • 4 Stars
    18 Reviews
  • 3 Stars
    4 Reviews
  • 2 Stars
    2 Reviews
  • 1 Star
    2 Reviews
90% of reviewers would recommend this product to a friend
83 Reviews
Rated 5 out of 5
Review posted

Game Changer!

With my first two kids, pumping at work was nearly impossible to do because it took so much time away and my milk supply depleted quickly. This time, with the Willow Pump, I have been able to pump several times a day while I am working with little to no impact on my schedule and responsibilities. I pump during meetings every day and most of the time people are completely unaware until I tell them. I am so THANKFUL for this product because I have been able to maintain my milk supply and am confident that I will be able to breastfeed longer. I even went on a 4 day work trip when my baby was 4 months old and was able to pump the entire time and keep up my milk supply! This product is a game changer! Totally worth the investment! Thank you Willow!

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Rated 5 out of 5
Review posted

Working mother lifesaver

With Willow I've been able to pump hands-free, not tied to a wall outlet or with tubes coming out of me. I am able to get things done not only for work but around the house. I have pumped at events with a jacket over. I have been able to see year and examine some patience while pumping as well.

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Rated 5 out of 5
Review posted

Life must GO ON!

Whether you are a working mom or a stay at home mom-this pump is a game changer. I had my second baby in 2016, and was determined to breastfeed as long as I could while working full time. I had the Medela Freestyle and had to rent the hospital grade pump for a few months once returning back to work because I didn't have the flexibility as a Nurse Anesthetist in the Operating Room to pump as often or as long as I was while on maternity leave. I do 24 hour call so a quality bread pump was my only life line to providing for my baby girl. I had to work hard to keep up breastfeeding. To the point where I started to resent the act of pumping itself. Fast forward to 2018 when I had my third baby and the Willow pump came out. I didn't have the time to chase a toddler, be there for my Autistic teenager, and put the WORK into breastfeeding. Game changer. I didn't have too! I didn't have to worry about when I could have time to pump or how long or scheduling it. I could just pop the pumps on and go about my life juggling 3 beautiful babies! I didn't have to go out of the way and rent a pump or worry about getting too full while working 24 hours. I could just GO ON with life and continue to breastfeed‚ no pressure! Thank you!

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Rated 5 out of 5
Review posted


I'm an exclusively pumping mom. My son doesn't latch. And now I can't imagine life without willow. I pump 5-6 times a day. I wish the bags were a little cheaper. At least if we bought in bulk because I go through them a lot. Over all. Great pump. Good customer service. Very fragile. Make sure you don't drop it. And simple push and it'll break. Mine fell from couch which wasn't high. And broke apart :( I had to get a replacement pump which wasn't cheap either but oh well you pay for convenience. Overall I'm satisfied.

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Rated 5 out of 5
Review posted

Reduced my pumping anxiety immensely!!

I recommend the Willow to EVERYONE! The amount of time I have gotten back has been well worth the out-of-pocket investment. I have been able to pump while on an airplane, picking up groceries, walking around a conference, and in other situations where previously, I would have stressed to plan around being near an outlet. I no longer have to plan my life around pumping - I can do it anytime, anywhere. So so grateful for Willow!!

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