Willow 360™ Container Set (2-pack)
Find your flange fit. Pump with confidence.
When it comes to wearables, sizing is different — you'll need a fit that's more snug. Most moms find that adding 1-3mm to their nipple size (or 0-2mm if you're pumping with Willow 360) results in optimal output and comfort.
Still need your nipple measurements? Try our sizing guide
|
Measured Nipple Size |
Willow Recommended Size Flange / Insert |
| 9-11mm | 13mm insert in 24mm flange |
| 12-13mm | 15mm insert in 24mm flange |
| 14-15mm | 17mm insert in 24mm flange |
| 16-17mm | 19mm insert in 24mm flange |
| 18-20mm | 21mm flange |
| 21-23mm | 24mm flange |
| 24-26mm | 27mm flange |
Sizing inserts can only be used with a 24mm flange or 24mm container insert.
Questions? Our experts can help.
1-888-WILLOW-3
How To Find Your Nipple Size
Step 1: Get a measuring tape
Measure the diameter of your nipple at its base while erect to determine its size accurately.
Step 2: consider sizing up
Most moms find that adding 1-3mm to their nipple size results in optimal output and comfort.
Step 3: take a look at our chart
Match your measurements to our sizing chart to find your recommended size flange / insert.
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Frequently Asked Questions
- NATHALIERated 2 out of 5 stars21 hours ago2 Stars
Very hard to clean the containers
- Ileana G.Verified BuyerRated 5 out of 5 stars4 days agoGreat quality
I am grateful that I can rely on Willow to provide great quality parts. I recently dropped my container and my heart sank. It did not break, and for that I am eternally grateful. This is my second time using this pump for my second baby. Customer service is also great!
- JustinneRated 5 out of 5 stars1 week ago5 Stars
Easy to use! I like being able to store milk in different containers and at different volumes (vs. using only the willow bags).
- Katie H.Verified BuyerRated 5 out of 5 stars1 week agoExcellent reusable option
Love this! Really happy to have a different option than the disposable bags.
- Saba H.Verified BuyerRated 1 out of 5 stars2 weeks agoTerrible
Not leak proof and hard to clean. The concept is good though but it did not turn out the way I had hoped
WPWillow Pump1 week agoWe greatly appreciate you taking the time to share your review, and we are so sorry to read about your experiences. We’d love the opportunity to turn your experience around!
We have some tips for cleaning from our Help Center if you'd like to review them: https://help.onewillow.com/s/article/How-do-I-clean-the-Flange-Flextube-and-Container
If you continue to experience any issues, please reach out to our Customer Care team at 1-888-WILLOW-3. We are here to help!
