Whether you’re building a stash or simply pumping for tomorrow, the Evenflo Feeding Advanced Breast Milk Storage Bags are perfect for storing your breast milk. These milk storage bags are leak-resistant and feature wide, reinforced seams and a dual-track zipper. The special gusseted bottom design allows the bag to stand on its own helping to reduce the chance of spills after pumping or when transferring milk to and from a collection bottle. When ready to store, place your filled bag in the refrigerator or flat in the freezer. These milk storage bags allow your milk to thaw quickly, saving you time when you are preparing breast milk for your little one. When ready to feed, transfer your milk easily from bag to bottle using the convenient pour spout. And as we could all use a little love along the way, the Advanced Breast Milk Storage Bags feature encouraging messages to help keep you motivated during your pumping journey. These bags are 100% free of BPA, polycarbonates, PVC and phthalates and are made of FDA-approved food grade material.