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🍼 Pump smarter, not harder — comfort and fit that keep you flowing!
The Willow Breast Pump Sizing Insert in 19mm is a BPA-free, flexible silicone flange insert designed to optimize comfort and milk output for moms with smaller breast sizes. Compatible with 24mm Willow flanges, it’s reusable, dishwasher safe, and recommended for replacement every 3 months to maintain peak performance. Trusted by over 300,000 moms, it delivers a secure, snug fit for a seamless, hands-free pumping experience.
| ASIN | B09B7WMGGQ |
| Additional Features | Wearable |
| Best Sellers Rank | #26,766 in Baby Products ( See Top 100 in Baby Products ) #158 in Breast Pump Parts |
| Brand | Willow |
| Brand Name | Willow |
| Color | Clear |
| Customer Reviews | 4.7 out of 5 stars 1,388 Reviews |
| Included Components | Breast Flange |
| Included components | Breast Flange |
| Is the item dishwasher safe? | No |
| Manufacturer | Willow |
| Manufacturer Part Number | SZ1964 |
| Material | Silicone |
| Material Type | Silicone |
| Material Type Free | Lead Free |
| Model Name | Willow Inserts |
| Model Number | SZ1964 |
| Number of Items | 1 |
| Operation Mode | Manual |
| Operation mode | Manual |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product Style | Compact |
| Size | 19mm |
| Special features | Wearable |
| UPC | 858298006613 |
| Unit Count | 2 Count |
H**A
Best for willow
If you own a willow pump these are the best for it. Do check the size accurately before buying though. These are very soft and fit perfectly with the willow. Cheaping out on these are a bad idea, the originals are much better
C**E
love it
very well made, and exact fit, also comfortable and easy to wash
W**N
Perfect!
The breast pump inserts worked great in my daughter’s breast pump.
S**H
Held up well
Fit perfectly in willow and spectra pumps. Have held up well with numerous times in the sterilizer.
A**R
Good flange inserts
Getting the correct flange insert is absolutely necessary when pumping. I got the Willow Go which comes with a standard 24mm flange. I use a 17mm so I could have bought a random one off Amazon but I wanted to make sure it was compatible with my pump so I just brought this brand. I do like the scalloped edges, it’s cute and adds a lil extra razzle dazzle to it. It fits perfectly in my pump. I did give 4 stars because of the price. $20 for these seems pricey and I’m sure I could have gotten other ones cheaper.
Trustpilot
5 days ago
2 weeks ago