Willow® Wearable Breast Pump Generation 3

Rated 4.1 out of 5
252 Reviews

More comfort. More control. And 20% more milk*.

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. Now with a brand new iOS app (Android app coming in March).

What's New for Generation 3?

Willow Pump Generation 3

Re-engineered from the inside out, our Generation 3 smart pump offers more comfort and control – and helps you get more milk.

  • Slower, softer pumping rhythm designed for comfort
  • Smart Suction technology adjusts based on your preferences to increase output (no need to press a button)
  • Plus, a new app exclusively for Generation 3 with step-by-step onboarding and personalized pumping tips

Select a Flange Size (Sizing Guide)
21mm available with Willow Milk Containers
(21mm Flanges coming soon)

Sizing Guide

Size matters! Here's how to find your Willow size

Coin Method

  1. First, stimulate your nipple until it perks up (don't skip this step!)

  2. Hold up a dime, nickel and quarter to compare each coin against the diameter of the base of both of your nipples, not the areola (see diagram below)

  3. Willow Size Guide

    Find your Fit

    If your nipple is: Your size is:
    Much smaller than a dime See Printable Sizing Guide
    Equal to or smaller than a dime 21mm
    (Milk Container only)
    Larger than a dime but smaller than a nickel 24mm
    Equal to or larger than a nickel but smaller than a quarter 27mm
    Equal to or larger than a quarter 30mm
    (Not Offered Yet)
    Note: Sizing is the same for Milk Container and Flanges
$499.99

Free Shipping on all Pumps.
FSA/HSA reimbursement eligible.
Need help deciding?

Milk Storage Options

Pump Your Way

Willow is the only in-bra pump that gives you the flexibility to pump directly into spill-proof storage bags (24 included with Pump Kit) or reusable Containers (sold separately).

Milk Storage Options

Pump Your Way

Willow is the only in-bra pump that gives you the flexibility to pump directly into spill-proof storage bags (24 included with Pump Kit) or reusable Containers (sold separately).

  • 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 disposable collection and storage bag (an essential part of the Pump Kit) or reusable Container inside the Pump (Container accessory sold separately).
  • 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 offering the option to pump into either Milk Bags or a Reusable Containers
  • The only wearable pump that is spill-proof in any position
  • Quiet for discreet pumping
  • Seven levels of suction comparable to most traditional double electric and hospital grade pumps, with two new lower suction levels and a new sensitivity setting
  • Smart Suction technology adjusts based on your preferences to increase output (no need to press a button)
  • New app exclusively for Generation 3 with step-by-step onboarding and simple, fast pairing – plus volume tracking, session history, and personalized pumping tips
  • Compatible with iOS (iPhone 6 or newer) – Android app coming in March
  • Only two parts to clean (dishwasher safe)
  • BPA free
  • Rechargeable battery lasts up to 5 pumping sessions to get you through the day
  • One year warranty from first use

Willow comes with everything you need to get started:

  • (2) Willow Pumps
  • (2) 24mm or 27mm Flanges
  • (2) Flextubes™
  • (24) 4 oz. Milk Bags
  • (2) Cleaning Brushes
  • Charger
What are the new features for Willow Pump Generation 3?
We’ve re-engineered how Willow pumps to yield more milk per session - and offer more comfort and control. Generation 3 has a slower, softer pumping rhythm and a sensitivity setting for comfort, plus new Smart Suction technology that adjusts based on your preferences to help you get more milk. Compatible with our new app exclusively for Generation 3, which offers fast, easy pairing, step-by-step onboarding, and personalized tips.
How do I download the Generation 3 App?
Our Generation 3 App is available now for iOS. Our Android App is coming in March - sign up for email updates to be the first to know when it’s available.
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.
What sizes are available?
The Willow Pump kit includes a set of two Flanges, available in sizes 24mm and 27mm (21mm coming soon). We offer Milk Containers in three sizes – 21mm, 24mm, and 27mm. Milk Containers are the perfect option if you measure 21mm and want to pump with Willow. Unsure of your size? Visit our sizing guide.
What should I order if I measure 21mm?
We recommend buying the pump in size 24mm Flange and the 21mm Container so you can pump most comfortably. Currently we only offer the 21mm in the Container option - 21mm Flanges are coming soon.
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 4.1 out of 5
Based on 252 reviews
  • 5 Stars
    139 Reviews
  • 4 Stars
    57 Reviews
  • 3 Stars
    20 Reviews
  • 2 Stars
    14 Reviews
  • 1 Star
    22 Reviews
83% of reviewers would recommend this product to a friend
252 Reviews
Rated 5 out of 5
Review posted

Pump and ride

Absolutely love the willow! I was able to pump and ride at 2 months postpartum! This pump made a 22 mile fatbike glacier ride possible!

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Willow Pump

Wow! That's amazing! Thanks so much for sharing!

Rated 5 out of 5
Review posted

Changed my breastfeeding journey!

I honestly fully credit this for the reason I’ve currently almost mad it to 6 months of breastfeeding my first child! I went back to work for about a month without it. I wasn’t able to spend nearly the time I needed to in order to give my little guy what he needed. I saw my supply decreasing and I was truly doing all I could think of. I’m a “just enough”-er as it is and it absolutely broke my heart! I ordered this pump as kind of a last effort because I had to try it. I want to at least get him through cold/flu season and then we’ll see where the journey takes us. After I started using the Willow, and made it through the learning curve, I’m so incredibly happy! My supply returned, I’m able to pump more and still get my work done and when I’m home with my little guy I can still give him all the attention he needs without having to unhook, unplug, etc. Not to mention, when he’s nursing he doesn’t despise the fact that I’m wearing it. I think with traditional pumps you have to sit up so straight, have a bottle or bag dangling, he wasn’t comfortable, I wasn’t comfortable. Life is just seriously so much better! I recommend this pump to anyone that will listen, I absolutely love it and I know I wouldn’t have made it this far without it!! 100% worth it!!!

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Willow Pump

What a great review! We're so happy to hear Willow is helping you meet your breastfeeding goals. Thanks so much for reaching out to share this with us!

Rated 5 out of 5
Review posted

My New Breastfeeding journey!!!

Let me just start off by saying thank you to the inventor who came up with this idea I haven’t been able to see what her name is but I thank you for inventing this for mom‘s like myself. I just received my willow pump yesterday which is February 12, 2020 and from the moment that I took it out the box to breast pumping for my baby I’ve been nothing but Excited! This is about to be the best pump is that there is out today! I believe this pump is better than the leading competitors “Elvie”. I know that it’s early on with me just using this pump but I love it !! and I haven’t seen any bad things going wrong so far the only thing I will say is that Willow should make bigger flange sizes for moms with bigger breasts and nipples because I do believe I will need a bigger size Flange(27mm currently, Hurry with the release date for the 30.5 mm). I would recommend this pump to any new mom, old mom, and a mom - in -between. I almost gave up breast-feeding and I am so glad that I am not attached to a wall anymore , not dreading to pump milk, and I can live my best life and a new breast life with my children, being on the go with the two-year-old and now a newborn. I hope this review helps any mom out there thinking about getting this breast pump my insurance covered mine and I’m hoping that they can get more companies out there that can either fully cover or partially cover this breast pump.I’m hoping that Willow can start to directly bill the insurance so that you won’t need to get…

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Willow Pump

Wow, Brittney! We loved reading this! Thanks so much for being part of the Willow family!

Rated 5 out of 5
Review posted

The BEST pump ever

I NEVER write reviews on anything but I absolutely love my Willow pump and want other moms to know how amazing it is! I was very hesitant to purchase a pump like this since everyone I know has a traditional pump, but I am so glad I made the decision. The freedom that this pump allows me is absolutely fantastic. I work in an outpatient cardiac rehab and I do not have to stop working while pumping (I wear a nursing cover that looks like a large scarf). My patients have no idea I am pumping and I come home each day with bottles for my son to go to daycare with the next day.

I pump about eight times in a 24 hour period exclusively with the Willow pump. My left pump was not working properly after three months of use and after working with the amazing customer service representatives troubleshooting my problem, they ended up replacing my pump within three days. Every experience I have had with customer service through text, email or phone call have been fantastic. I am so impressed with this company and their product. I will forever be a Willow mom!

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Willow Pump

We were thrilled to read this! Thanks for reaching out to share and for being part of the Willow family!

Rated 5 out of 5
Review posted

Takes some getting used to...but definitely worth it in the end!

I had been pumping with a Medela pump for 8 months before I got the willow. I got so worn down being stuck next to an outlet six times a day, and after seeing this pump, I was so excited about the idea of a wearable pump. I really struggled with the price, but thankfully, willow does payment plans with no interest so that is a definite plus.

But when I first got the pump, I had a lot of issues. I got the containers which I figured would be less wasteful and more eco friendly, but you really need to make sure they are clean. A couple days after using the pump, it would suddenly stop pumping saying that it was “full”, only to find that there was less than an ounce in there. I mean, I understand being a little off, but it was ridiculous! Thankfully, customer service was great and sent me a new container. Only for those containers to also malfunction and give me a false “full” sign. Turns out, the valve just gets easily gunked up which gives that false reading. Customer service suggested I soak it in vinegar, but I just soaked it in water and citric acid (which is what I use to get rid of hard water stains on other appliances around my house) and this fixed the problem right away. As long as I do this, the pump works fine.

So in conclusion, this pump honestly is great. Had a few hiccups in the beginning, and it does take some extra care in cleaning, but it has really changed my life a lot, and it has definitely been worth the money! Now I can actually be mobile and active…

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Willow Pump

Thanks so much for your feedback! We're so glad to hear you're enjoying the freedom from the plug!