Willow | Universal Sizing Insert Set | 2 Pack

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These silicone sizing inserts help to optimize output for moms who measure smaller than 21 mm. Fit into our 24 mm flanges to improve comfort and output for moms who measure smaller than 21 mm Flexible silicone material provides a snug, secure fit Compatible with Willow 360, Willow 3.0, and Willow Go flanges Dishwasher safe for easy clean-up Made without BPA for a safer pumping experienc Show more