If you are looking for a wearable pump that lets you move freely without cords, tubes, or a bulky external motor, the Willow Go is likely on your shortlist. It is one of the most popular in-bra pumps available, known for combining hospital-grade suction with a genuinely discreet design. Here is an honest, thorough look at what the Willow Go offers, who it suits best, and what to keep in mind before choosing it.
What Is the Willow Go?
The Willow Go is a wearable, hands-free double electric breast pump that sits entirely inside your bra with no cords, tubes, or external motor unit. Everything you need is contained in two compact cups that tuck against each breast, which means you can pump while working at a desk, taking a call, driving, or chasing a toddler. It is app-controlled, so you can start, stop, adjust suction, and track output from your phone. The Willow Go is available through Storkpump as an upgrade option with many insurance plans. Browse pumps with upgrade fee options here to see if it applies to your plan.
Suction and Performance
The Willow Go delivers hospital-grade suction of up to 280 mmHg per side, which puts it in line with traditional electric pumps in terms of power. It offers two pumping modes, stimulation and expression, with multiple adjustable suction levels in each so you can find a comfortable and effective setting. In an independent survey of pumping moms cited by the manufacturer, a majority reported that the Willow Go produced better milk output than other wearable pumps they had used. As with any wearable pump, output is highly individual and depends on factors like fit, supply, and how well your body responds to a wearable design versus a traditional pump. Many moms with an established supply find the output comparable to their traditional pump, while those in the early supply-building weeks sometimes pair it with a traditional pump for some sessions.
Design, Comfort, and Battery
One design feature that sets the Willow Go apart is its flange, which is engineered with a longer tunnel than many wearable pumps. This gives moms with elastic nipples more room and helps prevent the uncomfortable contact with the end of the tunnel that some wearables cause. The cups hold up to 5 ounces per side, and 7-ounce containers are available separately for moms who pump larger volumes. The rechargeable battery supports multiple pumping sessions on a single charge, and it charges via USB so you can top it up from a laptop or portable battery pack when you are away from an outlet. The Willow Go is also a closed-system pump, meaning a barrier keeps milk separate from the pump mechanism for better hygiene, and it has just a handful of dishwasher-safe parts that make cleanup quick between sessions.
Flange Sizing
The Willow Go comes with 21mm and 24mm flange options included, which covers a common fit range, with additional sizes available separately. Because wearable pumps position differently than traditional pumps, getting your flange size right is especially important for both comfort and output. The longer tunnel design helps with elastic nipples, but it does not replace the need to confirm your correct size first. Use the Storkpump Flange Sizing Guide to measure your nipple diameter before your first session so you start with the best possible fit.
Who Is the Willow Go Best For?
The Willow Go is an excellent fit for working moms who need to pump discreetly during the day, moms who want the freedom to multitask while pumping, and those who have an established supply and want a portable option that does not sacrifice suction strength. It is also a strong choice for moms with elastic nipples thanks to the longer flange tunnel. Moms who are exclusively pumping or working hard to establish supply in the early weeks may want to pair it with a traditional double electric pump for at least some sessions, which is a common approach lactation professionals recommend for wearables in general. Browse the full Storkpump pump collection to compare it alongside other covered options.
Insurance Coverage
The Willow Go is typically available through insurance as an upgrade item, meaning your insurance covers a base amount and you pay the difference for the wearable design. Some plans may offer different coverage. The Storkpump team verifies your benefits and walks you through your options so there are no surprises. Visit the Storkpump FAQ for details on how the ordering and upgrade process works, or check Medicaid-covered pumps here if you have Medicaid coverage and want to compare fully covered alternatives.
Frequently Asked Questions About the Willow Go
Is the Willow Go covered by insurance?
The Willow Go is most often available as an upgrade item through insurance, where your plan covers a base cost and you pay an out-of-pocket difference. Coverage varies by plan. The Storkpump team can verify your specific benefits. Browse upgrade-eligible pumps here to see your options.
How many pumping sessions does the battery last?
The Willow Go's rechargeable battery supports multiple pumping sessions on a single charge, making it practical for a full workday without needing an outlet. It charges via USB, so you can recharge from a laptop or portable battery pack. Charging between sessions when convenient keeps you ready for the next one.
Can I pump discreetly at work with the Willow Go?
Yes. The Willow Go sits fully inside your bra with no cords, tubes, or external motor, so there is nothing visible and nothing to hold. It operates quietly, and you can control it from the Willow app without touching the pump, which makes it well suited for pumping during meetings, at a desk, or on calls.
Is the Willow Go good for exclusive pumping?
It can work for exclusive pumping, particularly for moms with a well-established supply, thanks to its hospital-grade suction. Many exclusive pumpers find the best results pairing a wearable like the Willow Go with a traditional double electric pump for some sessions. If you are exclusively pumping, browse the full Storkpump collection to find the combination that works for your needs.
Learn More with Storkpump
For more help comparing wearable and traditional pumps, visit the Storkpump Learning Center. When you are ready to check your coverage and order, head to our breast pump collection to get started.
Sources
- U.S. Food and Drug Administration. Breast pumps. https://www.fda.gov/medical-devices/consumer-products/breast-pumps
- Academy of Breastfeeding Medicine Protocol Committee. (2021). ABM Clinical Protocol #35: Supporting breastfeeding during maternal or child hospitalization. Breastfeeding Medicine. https://www.bfmed.org/protocols
- Centers for Disease Control and Prevention. (2026). About breastfeeding. https://www.cdc.gov/breastfeeding/php/about/index.html
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