What are breast milk storage bags?

Breast milk storage bags help free up space in your bottles and let you store breast milk somewhere (your fridge or freezer) for later use. They are unlike storage bags you’ve used for food (so you can’t substitute a plastic sandwich bag, for example). Breast milk storage bags are much thicker and are BPA-free and FDA-approved for the use of storing and protecting breast milk during transportation, thawing and freezing.

Also helpful? “Most breast milk storage bags have ounce or milliliter markers on the side to track the volume of milk you are storing and feeding, which can be especially helpful when you go back to work,” says Helen Anderson, a lactation educator and founder of Milkies Milk Saver.

Choosing the best breast milk storage bags

When shopping for breast milk storage bags, it’s important to keep a few things in mind:

Make sure they're made of food-grade plastic. This assures you that the manufacturer knows exactly what is in the bag’s plastic, and that it is specifically designed for breast milk storage.

Check for a safety or tamper-resistant seal. A firm seal that you have to remove prior to use ensures that the bag is clean and uncontaminated.

Consider how it stores. A good breast milk storage bag will freeze flat and take up minimal space in your freezer.

If you’re looking to save time, consider bags that let you pump directly into them instead of bottles. This allows you to skip the step of transferring milk from bottle to bag (plus, you won’t have extra bottles to clean!).

Sinoy is the most efficient and trusted breast milk storage bags that won’t leave you crying over spilled milk.

Why We Love It

There’s a reason these are one of the most popular breast milk storage bags around, and it’s not just because SINOY has been a trusted name in the breastfeeding space for decades. These beloved breast milk bags cover all the bases: They’re made from thick, BPA- and BPS-free plastic that’s presterilized for safe use.

If you have the Breast Pump, you can pump directly into these bags, saving you time and dish washing many moms report that the bags fit around other types of breast pumps, too

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