Willow Go™ Wearable Breast Pump Flange Set 21mm (2-Pack)

They fit my pump perfectly. This option is way nicer then using the inserts in the bigger flanges. Less parts to worry about! I keep my other flanges with the inserts for backups. I prefer these instead.

Love my Willow go! Being mobile with my two kids is so important. It is super comfortable as well. Very happy with my Willow go and the replacement parts.

super comfortable! i love using the 21 size as opposed to the 24 with an insert. one less piece to clean makes a difference!

These flanges are my favorite! I get almost the same output with these as a “primary” pump's flanges. They are easy to use the Willow inserts for a customized fit. I definitely recommend having an extra set of parts for easy outings.

I purchased the 27MM flange for a better fit. This is more comfortable for me. I wish I could select my flange size when purchasing my pump so it's not an additional expense considering it came with flanges that do not fit.

i love that i can easily take these off my pumps in order to charge them instead of having to take every single part off, these are also super easy to clean and put back on so i don't have to spend so much time cleaning them, these really are my favorite pumps ever

Comfortable fit and works great. Their sizing chart is super helpful.

Great to have an extra set of parts

Do not waste your money on this pump! The pump gave me issues on the third day of use, while having a newborn, it was so bad . The flanges kept popping off, they sent me replacements for two of the parts, flanges and the milk container. The flanges keep popping off. I wash everything by hand, noting helped. I had to buy a different pump cheaper and way better quality. The momcozy.

In fairness to Willow, this review is for the Willow replacement parts as a whole and may not be an issue of the flanges. I've had this pump for less than 4 months and lately I've had issues where near every time I go to reassemble, the flange "pops" off the assembly. I used to be able to get it to stick back in place by pushing it down, wiping it down to ensure no moisture, etc, but lately that hasn't been working and as a result, it sadly renders the entire pumps inoperable. When I search this issue on Google, it seems like this is an issue that others have had. Bummer!