1. Introduction
The Willow 360 Wearable Breast Pump offers a hands-free, leak-proof pumping experience designed for convenience and efficiency. This manual provides essential information for the safe and effective use, maintenance, and troubleshooting of your Willow 360 pump.

Image: The Willow 360 Wearable Breast Pump, showing its compact, egg-shaped design.
2. Safety Information
- Always read and understand all instructions before using the pump.
- Keep the pump and all its components out of reach of children.
- Do not use the pump while bathing or showering.
- Ensure all parts are clean and properly assembled before each use to prevent contamination and ensure proper function.
- If you experience pain or discomfort, discontinue use and consult a healthcare professional.
- Use only Willow-approved parts and accessories. Using unauthorized parts may void your warranty and compromise safety.
3. What's Included
Your Willow 360 Wearable Breast Pump package includes the following components:
- 2 Willow 360 Pumps
- 2 Flanges (24mm)
- 2 Inserts (21mm)
- 2 Flextubes™
- 24 BPA-free 4 oz. Milk Bags
- 2 Cleaning Brushes
- 1 Nipple Sizing Tool
- 1 Charger
- Access to 360 Care (virtual onboarding session, sizing support, and more)

Image: A visual representation of the Willow 360 pump and all included accessories, such as flanges, flextubes, milk bags, cleaning brushes, sizing tool, and charger.
4. Setup
4.1 Initial Cleaning and Sanitization
Before first use, disassemble all parts that come into contact with milk (flanges, inserts, flextubes, containers/bags). Boil these parts for ten minutes or clean them according to the instructions in the Willow app or included manual. All parts are dishwasher-safe.

Image: Disassembled Willow 360 pump parts, including the pump body, flextube, and flange, ready for cleaning.
4.2 Charging the Pump
Ensure your Willow 360 pump is fully charged before use. The rechargeable battery lasts up to 5 pumping sessions.
4.3 App Download and Account Creation
Download the Willow app from the App Store or Google Play and create an account. The app allows you to track pumping sessions, monitor milk volume, and access expert-backed content.

Image: Screenshots of the Willow app on a smartphone and Apple Watch, displaying pumping session data and controls.
4.4 Flange Sizing
Correct flange sizing is crucial for comfort and optimal milk output. Use the included nipple sizing tool to measure your nipples. Refer to the sizing chart below to determine the appropriate flange or insert size.

Image: A visual guide demonstrating how to measure nipples and select the correct flange size for the Willow pump.

Image: A table showing nipple measurements and corresponding recommended Willow flange/insert sizes.
4.5 Assembling the Milk Container
The milk container comes pre-assembled. Before first use, disassemble and sanitize it. To disassemble, rotate the blue locking ring to the unlocked position and push hard on the insert tunnel to separate. Peel back the cap to open. After sanitizing, place the insert into the container with the tab facing up. Press firmly to seal, then rotate the locking ring to the locked position. Connect the small end of the Flextube™ to the spout on the insert tunnel, pushing the tip all the way down. Push the Flextube™ collar in so it sits firmly against the cap.
Video: A step-by-step guide on how to assemble the Willow 360 milk container, including disassembling for cleaning, reassembling, and attaching the Flextube.
5. Operating Instructions
5.1 Wearing the Pump
Place the pump inside your bra or pumping bra, centering it over your nipple. Ensure the breast shield is properly aligned and the pump is completely secure. The Willow 360 is designed to be fully in-bra with a discreet low profile, allowing for hands-free pumping.

Image: A woman lying down, demonstrating the leak-proof capability of the Willow 360 pump while in a reclined position.
5.2 Powering On and Adjusting Suction
Press the power button to turn on the pump. Use the app or the pump buttons to select your desired suction strength from the 7 available levels. It is recommended to start at a lower level and gradually increase to a comfortable suction that expresses milk effectively.
5.3 Pumping Positions
The patented latch enables 100% leak-proof pumping in any position, including bending over or lying down. This allows for maximum mobility and flexibility during your pumping sessions.

Image: A woman wearing the Willow 360 pump in her bra, with text overlays highlighting features like leak-proof design, smart suction, and app compatibility.
5.4 Milk Collection Options
The Willow 360 is compatible with self-sealing, ready-to-store milk bags or reusable containers. Choose the option that best suits your needs.
- Milk Bags: Enable 100% leak-proof pumping, self-sealing for hygiene, and are ready to store when removed from the pump. They can be placed directly in the fridge or used as a freezer storage bag.
- Reusable Containers: Allow you to pump milk directly into a container for easy transfer into baby bottles or other storage.

Image: A self-sealing Willow 360 milk bag filled with expressed milk, highlighting its convenience for storage.
5.5 Flip to Finish (for Containers)
When using the reusable containers, ensure the dial on the container is set to position "1" for pumping. Once finished, set the dial to position "2" (Flip to Finish) before removing the pump to prevent milk leakage. The dial must be set to "2" for safe removal.
Video: A short promotional video showcasing the Willow 360 pump's leak-proof design and hands-free operation, including a demonstration of the "Flip to Finish" feature for milk containers.
6. Maintenance
6.1 Cleaning
After each pumping session, clean all pump parts that came into contact with milk. All parts are dishwasher-safe. Refer to the detailed cleaning instructions in the Willow app or included manual for best practices.
6.2 Part Replacement
Replace your pump parts every 90 days, or whenever you notice changes in your milk output or signs of wear and tear. Regular replacement ensures optimal pump performance and comfort.
7. Troubleshooting
If you encounter any issues with your Willow 360 pump, refer to the following common troubleshooting tips:
- Error Codes: If the pump flashes a yellow light or displays an error code in the app, consult the Willow app for specific guidance and troubleshooting steps.
- Reduced Suction/Output:
- Ensure all pump parts are correctly assembled and sealed.
- Check your flange size using the nipple sizing tool; an incorrect size can affect output.
- Verify that pump parts are not worn out and replace them if necessary (recommended every 90 days).
- Ensure the pump is fully charged.
- Leakage:
- When using reusable containers, ensure the dial is set to "2" (Flip to Finish) before removing the pump.
- Confirm that milk bags are properly inserted and sealed.
- Check for any cracks or damage to pump components.
- App Connectivity Issues: Ensure your phone's Bluetooth is enabled and the app is updated to the latest version. Restarting both the pump and your phone may resolve connectivity problems.
For more detailed troubleshooting or persistent issues, please contact Willow Customer Support.
8. Specifications
| Product Dimensions | 11.2 x 7.6 x 6.8 inches; 5.6 Pounds |
| Item Model Number | PDW49 |
| Batteries | 2 Lithium Ion batteries required (included) |
| Manufacturer | Willow |
| UPC | 810104130462 |
| Number of Items | 2 (Pumps) |
| Additional Features | Double Pump, Ergonomic, Hands Free Usage, Portable, Wearable |
| Power Source | Battery Powered |
| Capacity | 4 ounces (per container/bag) |
| Material Type | Plastic |
| Dishwasher Safe | Yes (milk-contacting parts) |
9. Warranty
The Willow Pump comes with a 1-year non-transferable manufacturer's warranty for the original purchaser when bought directly from Willow Pump. The warranty is voided if bought from resellers on Amazon.
10. Customer Support
For additional help, chat support, or to access expert-backed content and services, please visit the official Willow website or contact customer service:
- Website: willowpump.com
- Phone: 1-888-WILLOW-3
- Email: care@willowpump.com
Willow also offers 360 Care, which includes virtual onboarding sessions and sizing support to help you get the most out of your pump.

Image: A smartphone screen displaying the Willow 360 Care section of the app, offering resources and support.





