Milk Containers
Milk Containers
Milk Containers
Milk Containers
Milk Containers

Milk Containers


Willow is now the only in-bra wearable pump that gives you the flexibility to pump directly into spill-proof storage bags or our reusable Containers.

  • Pump, pour, repeat - our reusable pumping option
  • Completely mobile and hands-free - take a call, take a walk, or check off your to do list
  • Fits right inside the Pump without cords or attachments
  • Easy transfer - pour into a bottle or storage container
  • Holds up to 4 oz.
  • BPA free
  • Dishwasher safe
  • Compatible with Willow Generation 2 and 3 only
  • Replace every 3 months
  • Includes 2 Containers and 2 Inserts

Insert Size

Size Guide

  • 21mm
  • 24mm
  • 27mm


Free Shipping on Orders Over $70
Free Shipping on Orders Over $70

Find Your Flange Size

with a ruler app on your phone

    Your flange size is based on your nipple measurement in millimeters. Use an app ruler for easy and accurate sizing

    • Download "Ruler 2.0" for iOS or "Millimeter" for Android phones.
    • In iOS app settings, set measurement to “mm”. For Android, select default calibration.
    • Stimulate nipple to perk it up
    • Place phone screen perpendicular to nipple. (Figure 1)
    • Nipple base should line up with the zero points in the corner of app screen (Figure 2)
    • Slide measurement bar on screen to opposite nipple base - that’s your nipple measurement. (Figure 3)
    • Use a flange that’s 2-4 mm larger than your nipple measurement. (Figure 4)
      • Willow Size Guide

        Hold phone
        perpendicular to nipple.

        Willow Size Guide

        Use your finger to slide the ruler line to measure nipple.

        Flange Size Chart 4

        Find the right flange sized based on
        your measurements.

        Flange Size Chart