Flange sizes for Willow breast pumps
Which flange sizes are offered for Willow breast pumps?
Willow Pump Willow Go® Flange Set (2-pack): Sold in three flange sizes: 21mm, 24mm and 27mm Willow Pump Willow Sync Flange Set 24mm (2-pack): The flanges are 24mm. Willow Pump Willow Sizing Insert Set: Sizes offered are 13mm, 15mm, 17mm, 19mm, 21mm and 27mm. Willow Pump Breast Pump Sizing Kit: The kit provides a wide range of inserts to find the right breast pump flange fit for comfortable pumping and milk output.
| Product | Why | Sizes | Pack size | Notes | SKU |
|---|---|---|---|---|---|
| 1. Willow Pump Willow Go® Flange Set (2-pack) sold by onewillow.com | Sold in three flange sizes: 21mm, 24mm and 27mm | Sold in three flange sizes: 21mm, 24mm and 27mm listing | Sold as a 2-pack listing | 24mm flanges fit sizing inserts for those measuring smaller than 21mm listing | - |
| 2. Willow Pump Willow Sync Flange Set 24mm (2-pack) sold by onewillow.com | The flanges are 24mm. | The flanges are 24mm. listing | Sold as a 2-pack. listing | Designed for Willow Sync pumps. listing | The SKU is PF2435. listing |
| 3. Willow Pump Willow Sizing Insert Set sold by onewillow.com | Sizes offered are 13mm, 15mm, 17mm, 19mm, 21mm and 27mm. | Sizes offered are 13mm, 15mm, 17mm, 19mm, 21mm and 27mm. listing | The sizing inserts come as a 2-pack. listing | They are designed for the perfect fit and performance with Willow and make pumping more comfortable for mamas with smaller flange sizes. listing | Each size has its own SKU, for example SZ1385 for 13mm and S827 for 27mm. listing |
| 4. Willow Pump Breast Pump Sizing Kit sold by onewillow.com | The kit provides a wide range of inserts to find the right breast pump flange fit for comfortable pumping and milk output. | - | - | The kit provides a wide range of inserts to find the right breast pump flange fit for comfortable pumping and milk output. listing | The kit's SKU is USK110. listing |
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Written 2026-10-11T19:02:49.643Z.
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