BPA free* and food safe* for baby. Spill proof for sanity. Our 4 oz. disposable Milk Bags feature a one-way valve so milk goes in and doesn’t come out. Tuck a fresh bag inside Willow™, pump, and then pour it or store it. They’re also fridge and freezer safe to help your supply stay fully stocked.
* All material that comes in contact with breast milk is BPA free and food safe.