





Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.
✨ Pump in comfort, fit with confidence! 🍼
The Willow Breast Pump Sizing Insert in 21mm is a BPA-free, flexible silicone flange insert designed to improve fit and comfort for breastfeeding moms. Compatible with 24mm Willow flanges and popular pumps like Spectra and Eufy, it’s reusable, dishwasher safe, and available in multiple sizes to optimize pumping efficiency and comfort.





















| ASIN | B0BX7J17S9 |
| Additional Features | Portable, Wearable |
| Best Sellers Rank | #13,250 in Baby ( See Top 100 in Baby ) #527 in Breastfeeding Supplies |
| Brand | Willow |
| Brand Name | Willow |
| Color | Clear |
| Customer Reviews | 4.5 out of 5 stars 75 Reviews |
| Included Components | Breast Flange |
| Is the item dishwasher safe? | Yes |
| Item Weight | 18.14 g |
| Manufacturer | Willow |
| Manufacturer Part Number | SZ2186 |
| Material | Silicone |
| Material Type | Silicone |
| Material Type Free | BPA Free |
| Model Name | Willow Inserts |
| Model Number | SZ2186 |
| Number of Items | 1 |
| Size | 21MM |
| Special Feature | Portable, Wearable |
| UPC | 810104130455 |
| Unit Count | 2 Count |
J**8
So comfortable!
These are by far the most comfortable inserts I’ve used. The silicone is super soft so it doesn’t give that pinching feeling. They fit my spectra and eufy pumps perfectly and collection cups for the spectra as well.
A**I
Compatible with Eufy
I bought to go with my eufy pumps and they’re the perfect fit and super comfortable!!
K**M
Comfortable
These work great with my Willow Go’s and my other “wall pump.” Very comfortable fit.
K**A
Favorite inserts so far
My favorite inserts by far, I use them in my willow pump and when I pump with my spectra they’re great and comfortable
A**.
Great fit
These inserts have made pumping so much more comfortable. They're very thin compared to other inserts so they fit a lot better, and they stay in place nicely without leaving a gap for milk to escape.
K**Y
Good quality
Inserts are nice and soft but durable. I can use them in multiple different pumps.
A**K
Fits perfectly!
Product came exactly as described and fit my willow pump perfectly!
B**Y
True to size inserts
The inserts worked great and fit into my Willow pumps well.
Trustpilot
1 month ago
2 weeks ago