Replacing Your Parts
Frequently Asked Questions
Our best-selling pump, powered by innovative ComfortFlow™ technology for more milk output. Customizable hospital-grade suction, app-controlled, and ranked #1 Wearable Breast Pump by Babylist, this top seller is perfect for multitasking moms. Kit comes with 21, 24mm flanges & 5 oz SplashGuard™ containers.
A must-have for every nursing mom: The only wearable in-bra manual pump with an ergonomic handle and hospital-strength, two-phase suction - no charging required. Includes 24 mm flange made of soft silicone for a smooth fit and optimal milk flow.
Meet the Breast Milk Cooler that cools faster and stays colder for up to 24 hours vs. leading milk coolers.* Plus, with new sizes, colors, and two ways to cool, this patent-pending Cooler safely and stylishly lets moms store milk wherever the day takes them.
*Compared to leading milk coolers in Eurofins 2026 controlled, third-party testing
The all-in-one cleaning kit for pump parts, bottles, and more. Just add your favorite soap!
Protect your pump on-the-go with our sleek, sturdy, and easy-to-clean carrying case.
Everything you need to prioritize breast care and comfort, catch every drop of hard-earned breast milk, and feed with more confidence. Plus, every purchase includes access to a virtual appointment with an International Board Certified Lactation Consultant (IBCLC), as well as a free digital feeding course.
Same high-quality bag, new top-quality tech. Our durable, leak-proof bags are now designed with a scannable, AI-enabled code to auto-input your milk bag information into your digital stash in the Willow app. However you choose to pour and store, you’ll finally have the control and peace of mind you crave.
Optimize breast milk storage with our new Breast Milk Bag Flatteners, designed to help you neatly and efficiently organize every last drop.
Find your perfect breast pump flange fit with a wide range of inserts designed for maximum pumping comfort and milk output.
Our silicone sizing inserts help to optimize output for moms who measure between 13 mm and 27 mm.
• New! Our redesigned Splashguard Containers help prevent milk from splashing out of the container, giving you more freedom to move
• Our low-profile containers are available in 5 oz or 7 oz to give you the flexibility you need
• Dishwasher-safe for easy clean-up (they’re made without BPA, too!)
• Designed for easy milk transfer into a bottle, storage bag, or container
• Splashguard is only compatible with the new Splashguard Container
• 2 x Container Backs
• 2 x Container Bowls (5 or 7 oz)
• 2 x Duckbills
• 2 x Splashguards
Diaphragms not included. You can shop additional Willow Go Accessories here.
Free shipping on orders $50+
Top-ranked 24/7 customer care
Adding product to your cart
For optimal output, replace every 90 days (or when you notice discomfort or signs of wear).
Yes, you can. Simply pay for your breast pump 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.
The Splashguard Container kit includes 2 container bowls, backs, Splashguards and duckbill valves in 5 or 7 oz.
After every use, you can wash by hand or pop the parts in the dishwasher on the top rack only.
You'll need to transfer your milk to a storage container after you pump with Go. It’s important to wash breast pumping parts after every session to avoid the growth of bacteria.
Replacement rates can vary based on how often you pump, but we recommend replacing the flanges, containers, duckbill valves and pump diaphragms every 90 days for optimal performance
Get in touch with our customer support team via chat, email, or calling 1-888-Willow-3
No. Splashguards should not be used with earlier versions of the Willow Go container, as they do not have a vent to prevent pressurization, which may cause leaking to occur.
No. The Splashguard prevents milk from splashing out of the container, giving you more freedom to pump on the move. The Willow 360 is still the only pump that’s 100% leak-proof in any position – laying down, bending over, or running around.
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