Breast milk is precious (and laborious to pump), so you don’t want to see any of it spilled. That’s why the best reusable milk storage bags will have a double-zipper seal to prevent leaks and are made of durable materials that can hold up to 6 ounces of fluid. They also should be easy to clean and come pre-sterilized, as well as stand upright in the fridge and freezer. In addition to plastic and silicone options, there are even a few bags that can replace mason jars, making them a versatile solution for storing food other than breast milk after you finish breastfeeding.
Our top picks include a wide variety of sizes, materials, and features, like an easy-pour spout and a label that’s large enough to write on. Some are designed for pumping directly in, while others have space to attach an adapter for a bottle. We also looked for bags that are BPA-free, freezer-safe and thawable, easily stand up in the fridge and freezer, and are easy to assemble and use.
These simple, pre-sterilized bags have a double zipper to prevent leaking and are easily sized for a wide range of bottles. They also have a space to write on the bag for storage guidelines, and a gusseted bottom that helps them stand up in the freezer without tipping over. Our only complaint is that they didn’t freeze as flat in testing and have a less-durable feel than some of the other options we tested. best reusable milk storage bags