Introduction
The Willow 16oz Portable Breastmilk Cooler is designed to safely store breast milk at a consistent, cool temperature for extended periods. Constructed from durable, double-walled stainless steel, this cooler maintains milk below 59°F (15°C) for up to 24 hours. Its compact design is ideal for on-the-go use, fitting conveniently into most cup holders and being TSA compliant.
This cooler offers flexibility with two cooling methods: using the included ice pack or standard ice cubes. It is engineered for sanitary milk transfers and is free from BPA, BPS, PFAS, and lead, meeting the highest standards for breast milk storage guidelines set by the American Breastfeeding Medicine (ABM).

Image: The Willow 16oz Portable Breastmilk Cooler, showcasing its sleek design and portable nature.
Product Components
Familiarize yourself with the components of your Willow Breastmilk Cooler:
- Cooler Bottle: The main insulated container.
- Cooling Cup: An inner cup that holds the ice pack or ice cubes.
- Ice Pack: Reusable gel pack for cooling.
- Cooling Cup Spout: Allows for direct pouring of milk.
- Lid: Secures the contents and features a handle for portability.

Image: An exploded diagram illustrating the individual parts of the Willow Breastmilk Cooler: Lid, Cooling Cup Spout, Ice Pack, Cooling Cup, and Cooler Bottle.
Setup
Before first use, and after each cleaning, ensure all components are dry.
- Prepare the Ice Pack: Place the included ice pack in a freezer for at least 4-6 hours, or until completely frozen.
- Assemble the Cooler:
- Insert the frozen ice pack into the Cooling Cup.
- Place the Cooling Cup (with ice pack) into the Cooler Bottle.
- Attach the Cooling Cup Spout onto the Cooling Cup, ensuring it is securely twisted.
- Finally, screw the Lid onto the Cooler Bottle, making sure it is tightly sealed.
Alternatively, if using ice cubes, fill the Cooling Cup with ice cubes and then proceed with attaching the Cooling Cup Spout and Lid.

Image: Demonstrates the two cooling options: filling the cooler with ice cubes or inserting the frozen ice pack.
Operating Instructions
To use your Willow Breastmilk Cooler:
- Pour Milk: Once your breast milk is expressed, carefully pour it directly into the Cooling Cup Spout. There is no need to remove the ice pack or cooling cup for this step.
- Secure Lid: Ensure the Lid is securely fastened after pouring to maintain the internal temperature.
- Transport: The cooler is designed for upright use. Avoid laying the unit on its side or storing it horizontally for extended periods, as this can compromise the seals and lead to leakage.
- Storage Duration: The cooler will keep breast milk at a safe temperature (below 59°F / 15°C) for up to 24 hours.

Image: A user pouring breast milk directly into the cooler's spout, demonstrating ease of use.

Image: A person holding the Willow cooler, highlighting its portable design and integrated handle.
Maintenance and Cleaning
Proper cleaning ensures hygiene and extends the life of your cooler.
- Dishwasher Safe: All components of the Willow Breastmilk Cooler are dishwasher safe for convenient cleaning.
- Hand Washing: For hand washing, disassemble all parts. Wash with warm, soapy water and rinse thoroughly. Use a bottle brush for hard-to-reach areas.
- Drying: Allow all parts to air dry completely before reassembling or storing to prevent moisture buildup.

Image: The Willow cooler disassembled into its individual components, ready for cleaning.
Troubleshooting
If you encounter issues with your Willow Breastmilk Cooler, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Milk not staying cold | Ice pack not fully frozen, lid not sealed, cooler stored horizontally. | Ensure ice pack is completely frozen. Check that the lid is tightly secured. Always store the cooler upright. |
| Leakage | Lid or spout not properly sealed, cooler stored horizontally. | Verify all components are twisted on tightly. Ensure the cooler remains upright during transport and storage. |
| Difficulty cleaning | Milk residue in crevices. | Disassemble all parts and wash immediately after use. Use a bottle brush for thorough cleaning. All parts are dishwasher safe. |
Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 4.2 x 4 x 11.5 inches |
| Material Type | Stainless Steel |
| Material Composition | Stainless steel |
| Additional Features | Portable |
| Number Of Items | 1 (includes cooler and ice pack) |
| Batteries Required | No |
| Item Weight | 2.18 pounds |
| Capacity | 16 oz (473 mL) |
| Cooling Duration | Up to 24 hours (below 59°F / 15°C) |
Warranty and Support
For warranty information or product support, please refer to the official Willow website or contact their customer service directly. Keep your proof of purchase for any warranty claims.
Return Policy: This product typically has a 90-day return/replacement policy when purchased from Amazon.
For further assistance, visit the Willow Store on Amazon.





