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โจ Pump in comfort, fit with confidence! ๐ผ
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, itโs reusable, dishwasher safe, and available in multiple sizes to optimize pumping efficiency and comfort.





















| ASIN | B0BX7J17S9 |
| Additional Features | Portable, Wearable |
| Best Sellers Rank | #3,894 in Baby ( See Top 100 in Baby ) #188 in Breastfeeding Supplies |
| Brand | Willow |
| Brand Name | Willow |
| Color | Clear |
| Customer Reviews | 4.7 out of 5 stars 1,521 Reviews |
| Included Components | Breast Flange |
| Is the item dishwasher safe? | Yes |
| Item Weight | 0.04 Pounds |
| 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 | 2.0 Count |
J**A
Perfect size matters
This sizing insert actually made a noticeable difference for me ๐ค What I really like is how soft and flexible the material is. It feels gentle, not stiff or uncomfortable, and it fits well inside the flange without sliding around. Once I found the right size, pumping felt way more comfortable and a lot less irritating. It also helped improve fit and suction, which made the whole pumping session feel more efficient and less awkward. Definitely one of those small accessories that makes a big difference. My honest take: itโs simple but really effective if you need a better flange fit. Not exciting, but absolutely useful for comfort and consistency ๐ค
C**E
love it
very well made, and exact fit, also comfortable and easy to wash
S**H
Held up well
Fit perfectly in willow and spectra pumps. Have held up well with numerous times in the sterilizer.
C**L
Great for Willow Go Pump
These work great in my Willow Go Pumps.
K**T
Soft, comfortable, and easy to use
Purchased these to go with my Willow Wave manual pump. The inserts are softer than I thought and fit in the Wave perfectly, making my pump much more effective and comfortable. I was sized by a lactation consultant and purchased the size she suggested. Easy to clean, insert and remove, highly recommend.
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, itโs 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 Iโm sure I could have gotten other ones cheaper.
M**Y
Comfortable!
Made pumping more comfortable!!
T**Y
Willow Go flange insert
Insert firs perfect inside the 24mm flange for the Willow Go. Its exactally what I needed for a solid pumping session.
A**M
Works well and very comfortable
Gentle and effective.
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
H**A
Best for willow
Fits perfectly with willow no problems with fit and is very soft and comfortable on the nipple. Itโs not flimsy or cheap like many other generic ones. Save yourself time and get the originals.
Trustpilot
3 days ago
2 weeks ago