






🍼 Pump smarter, not harder — comfort and fit that keep you flowing!
The Willow Breast Pump Sizing Insert in 17mm is a reusable, BPA-free silicone flange insert designed to improve comfort and milk output for moms with smaller breast sizes. Compatible with 24mm Willow flanges, it’s dishwasher safe and available in multiple sizes to ensure a perfect fit. Trusted by over 300,000 moms, it’s recommended to replace inserts every 3 months for optimal performance.






| ASIN | B09B7VMH7S |
| ASIN | B09B7VMH7S |
| Additional Features | Portable, Wearable |
| Brand Name | Willow |
| Color | Clear |
| Customer Reviews | 4.7 4.7 out of 5 stars (502) |
| Customer reviews | 4.7 4.7 out of 5 stars (502) |
| Included Components | Flange |
| Is the item dishwasher safe? | No |
| Item Weight | 0.04 Pounds |
| Item model number | SZ1763 |
| Manufacturer | Willow |
| Manufacturer | Willow |
| Manufacturer Part Number | SZ1763 |
| Material Type | Silicone |
| Material Type Free | Lead Free |
| Model Name | Willow Inserts |
| Model Number | SZ1763 |
| Number of Items | 1 |
| Operation Mode | Manual |
| Power Source | Battery Powered |
| Product Dimensions | 12.7 x 3.81 x 14.48 cm; 18.14 g |
| Size | 17MM |
| UPC | 858298006606 |
| Unit Count | 1.0 Count |
A**R
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.
M**A
Comfortable and helps my flanges maintain suction!! Highly recommend
M**A
LOVE this pump. I used a Spectra during my maternity leave and thought I had a nursing/pumping schedule down pat. Then I went back to work full time and said schedule became worthless in a heartbeat. I work in healthcare and despite having a private office AND an extremely breast-friendly environment I just could not get my act together. Baby woke at a different time every day, some days I didn’t have time to pump before work, and I’d arrive to my first patients with two full boobs and nothing I could do about it for four+ hours. My supply dropped from plentiful to barely there to insufficient in the space of two weeks. Willow Go saved me. Day one I didn’t have time to pump before work and — BOOM popped these ladies in and saw my first three patients while pumping. Snuck away for five minutes to empty the milk into a bottle and rapidly disassemble everything (I keep the dirty parts in the fridge until lunchtime, when I wash them), then got right back to work. I could have cried, I was so happy. I can now pump 2-3 times during normal business hours and it’s been a game changer. Cleaning the parts is a pain in the ass but I can do that over lunch. I use my Spectra at home since it’s easier to clean. But I’ve come to prefer the Willow Go between the two. I’d heard from other users that the wearables don’t empty you like a Spectra or Medela but that thankfully has not been the case for me. I actually just use stimulation mode for the entire 25 minutes and that seems to work best for me for some weird reason. Anyhow my supply has now rebounded and mommy’s stress level is soooooooo much better. Yes you look like Dolly Parton wearing them and yes your boobs click and vibrate while they’re on BUT it’s so worth it. Five stars.
N**T
Works perfect and was cheaper to buy here than from the Willow website!
M**R
Buying these made all the difference in the Willow Go’s performance! Highly recommend
Trustpilot
1 month ago
1 month ago