Willow Go® Flange Set (2-pack)

$20 ~~$39.99~~ In stock

Willow Go's flanges come in 3 sizes so you can find your best fit. In addition, 24mm flanges are compatible with sizing inserts for mamas who measure smaller than 21mm.

Replacing Your Parts

For optimal output, replace every 90 days (or when you notice discomfort or signs of wear).

How long does breast milk last?

How to thaw & warm safely

How to store breast milk on-the-go

Customer Reviews (4.0 / 5 · 1 review)

David U. ★★★★☆ Aug 23, 2026

The 24mm size fits my smaller measurement perfectly with the inserts, and having a two-pack means I always have a clean one ready. Would love if they offered a 21mm option directly, but these work well for my backup pump kit.