The Willow Portable Breast Milk Cooler holds up to 16 ounces of breastmilk. (That's 3-4 pumping sessions' worth of milk on average.)

You can put the stainless steel Cooler vessel and the Lid with Handle into the dishwasher. We recommend hand-washing the Ice Pack.

For optimal results, put ice pack in freezer for at least 8 hours, and ideally up to 12 hours.

According to the CDC and ABM guidelines, breast milk can stay in a cooler with ice packs for up to 24 hours and remain at a safe temperature.

The Cooler is 9.5’’ tall and 3’’ wide. It fits in most standard cup holders.

Yes! TSA regulations state that any medical necessary gel ice packs are exempt from liquid travel restrictions in any state (eg. melted, slushy), and with or without the presence of breast milk.

Willow is a medical device company that takes the safety, quality, and efficacy of our products very seriously—especially as a company run by and for moms. The Willow Portable Breast Milk Cooler is not made with any lead parts and does not use lead in the manufacturing or assembly process. The Portable Breast Milk Cooler has been tested by a third-party lab and complies with all REACH and RoHS standards.