As a nursing mom who works full time, I find breast milk bags to be a huge convenience! They come pre-sterilized, are space-saving, and make thawing a simple task. In addition, each bag is labeled with instructions regarding breast milk storage and use.

These bags are the best I've found locally. BESTMILK bags are Bisphenol-free and comply with FDA and EU standards.
These pre-sterilized bags have a zipper seal, are easy to write on, can stand upright for easy filling, will hold as much as 8 oz, and can be stored flat.
I find that they use less space than Lansinoh bags while storing just as much milk.

Because the label is on the portion used for storage, it is suggested that you fill in the information before pouring milk in.

Each box contains 25 disposable bags. P350/box