This bulk pack of 12 collection containers lets you stock up on extra milk and is compatible with any Medela breast pump. Made of special FDA-grade plastic designed to retain breast milk's beneficial properties, they're a great choice for freezer storage. Why it's a giggle pick: Pumping directly into a storage container (instead of transferring the milk over from the pump) means you never waste a precious drop! Who it's perfect for: Breastfeeding moms who own any Medela breast pump and want a sturdy, reusable storage solution. Click here for more product details .