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Breast Milk Storage Bags: 8 Picks For Your Stockpiling Needs

Breast Milk Storage Bags: 8 Picks For Your Stockpiling Needs

Breast milk storage bags are made to contain sizable quantities of milk without risking a burst or an accidental leak, as well as being practical for storage.

There are some out there that don’t adhere to these qualities and just end up being a burden more than an aid. It can be devastating if any of that precious milk goes to waste.

To avoid that, it’s always a good idea to store milk in a well-sealed milk bag.

Breast milk frozen in storage bags for baby

You also want to make sure that these bags are safe for your baby.

This means avoiding any potential harmful chemicals that may come in contact with you or your precious little one.

That’s why I made sure to ask around with local moms and online what some of the best milk storage bags on the market were, which led me to compiling this handy little list.

I hope one of them manages to tick all the right boxes for you, mamas.

1. Lansinoh Breast Milk Storage Bags

The first milk storage bags on this list are made by Lansinoh, a company known to produce high quality breast pumping gear.

These high-quality, pre-sterilized breast milk bags feature a twin zipper seal to ensure the safe storage of milk.

You can store these bags flat in your fridge or freezer to save space.

One great thing about them is the addition of a spout to make the transfer of milk from bag to bottle as clean and spill-proof as it possibly could be.

Lansinoh bags are pretty popular with nursing mothers and have received rave reviews by most of them.

They’re BPS-free and BPA-free, and can also be used with the Lansinoh pumps easily.

These bags boast durability and strength.

The double seal seams and the dual zipper seal have been strengthened to ensure optimum security.


  • You can pump directly into the bag
  • Double zipper seal
  • Affordable
  • Easy to label
  • Double-sealed seams


  • Some moms complained about leakage

2. Nuk Seal ‘n Go Breast Milk Bags

Here’s yet another familiar baby product manufacturer that takes care that their products are made with the highest standard in mind, making their milk storage bags leak-proof and freezer-friendly.

With double zipper seals, you can easily store your precious breast milk in the freezer or refrigerator without fearing any leaks.

They’re both self-standing and freezer safe, meaning that they can lay down or sit safely on the freezer rack before you’re ready to use them.

So if you place them standing, you won’t have to worry that they might spill over.

With its air-tight oxygen barrier, Nuk Seal ‘n Go keeps breast milk hygienic and fresh while inside the bag.

With dual-zip lock, it has added stability. When filled with milk, it avoids spills with its gravity-fed pouring spout.


  • Gravity-fed pour spout
  • Leak-proof
  • Double zipper seal
  • Tamper-resistant tops
  • Inexpensive
  • Versatile; can be stored both horizontally and vertically


  • Some moms complained that the bags had a somewhat potent chemical odor
  • The bag material makes it a bit hard to stick a label to them
  • Pumping directly into the bag sadly isn’t possible given their construction, but they’re still a rather solid choice

3. Medela Pump and Save Breast Milk storage bags

Speaking of which, Medela’s storage bags do actually allow you to pump from breast to bag directly.

While Medela storage bags are good for directly storing milk, trying to pour the milk from the bag is a little bit harder.

Many moms use the openings that are used for the adapters to pour the milk, and others say that the breast shield of the Medela breast pump is a nice funnel.

Medela also sells plastic bags specifically for those who don’t want to pump directly into the container.

The storage bags themselves consist of two different layers, the outer, PET layer (much like commercial plastic bottles) and an inner, LDPE layer to keep the milk safe.

This construction allows the bags to be properly labeled thanks to the ample amount of space to write on, and the second layer allows for better sticking, if need be, for labels.

Even though it might not be important to everyone, some more organized mamas can keep track of which bag has been frozen longer so you can set a thawing order.

They’re designed to save space and can be stored lying flat.

This way, thawing the frozen milk gets done more quickly.


  • You can pump directly into the bag
  • Adapters for breast pumps are included
  • Zipper seal
  • BPA-free
  • Self-standing


  • Hard to pour, as it doesn’t have a spout
  • Some mothers complained about leakage issues
  • Slightly more expensive than competitors, but well worth the price

4. Dr. Brown’s Breast Milk Storage Bags

Dr. Brown’s as a company always makes sturdy and safe baby gear and you can make sure they always keep it top quality, which is why they make for another great choice among the many other storage bags here.

This storage bag has a very long-lasting construction and is made from thick plastic.

It also has an exterior attachment to protect the bag if it accidentally slips from your hands.

It holds the air out with double zip screens and guarantees the freshness of breast milk with its super thick packaging.

Dr. Brown’s storage milk bags feature a gusseted bottom for quick packing or preservation.

All you need to do is to take off the perforated seal and remove the zip closer.

And, it goes without question that these milk storage bags are free of BPA. Its wide surface also allows you to write down the date and time for safe storage.


  • Tamper-resistant
  • No leaks
  • They can stand upright for easier pouring and convenience
  • FDA-approved


  • You can’t pump into it directly
  • Doesn’t lay as flat as other bags, so it’s harder to store them

5. Ameda Store ’N Pour Breast Milk Storage Bags

Here’s another fine example of quality and care over price.

Ameda brings moms everywhere a different spin on the regular pouring spout.

The pour spout design is unique and its aim is to make the transition from bag to bottle an easy task.

Its tear-and-pour design is quite notorious for being spill-proof and even if your hands tend to shake, this ingenious design helps keep the milk from spilling.

The uniqueness is added onto them even further with the fact that the pour spout is separate from the bag, making storage easier.

These storage bags are compatible with Ameda breast pumps or any other breast pumps if you use a pump adapter.


  • Easy to pour
  • Easy to label because of wide surface
  • Self-standing


  • Some nursing mothers complained about leaks
  • Their untraditional shape takes up more space
  • Only usable for pumping because they’re hard to fill up otherwise

6. Kiinde Breast Milk Storage Twist Pouch

This is a brand I had only come upon thanks to the advice of some other local moms.

It’s not that well known (at least not to me), but they sport a rather unique air-tight, twist cap design reminiscent of a thermos.

This handy feature prevents leaks.

There’s also the Kiinde natural squeeze feeding bottle, this allows you to avoid transferring any milk stored inside to a bottle later on.

You can also pump directly into these bags and they’re compatible with nearly all breast pumps in the market.

These storage bags can be stored lying flat and they’re also self-standing.

I’d recommend these pouches for any mommy that doesn’t want to transfer milk to a feeding bottle.

Thanks to their thermos-like design, you really don’t even need to – you can just do it directly from the storage bag.


  • Can be used to feed the baby directly
  • Free of BPA, PVC, and phthalate
  • Twist seal caps
  • Available in two sizes: 6 and 8 oz


  • The twist seal cap tends to become rather unwieldy for storage and ends up taking up a lot of space
  • Some of the bags sometimes come with measurements that can be a bit off

7. Philips AVENT Breast Milk Storage Bags

One of my personal favorites when it comes to baby products – especially their pacifiers and baby bottles – because Philips Avent makes all their products durable and safe for both the mom and baby.

These storage bags are made from strong, long-lasting layers and have double seams on the side.

Its double zipper is designed to prevent leaks.

Their wide neck design is very useful when it comes to pouring inside of it.

They’re made of strong, BPA-free plastic and their seal is tamper-proof. Phillips Avent storage bags are pretty sturdy too.

However, their stiff exterior and hard sides make it a little awkward when using.

These bags come in boxes of 25, 50, or 100.


  • Material makes labeling a lot easier for storage organization purposes
  • Self-standing, so you can store them either upright or down on their side
  • Double-zipper top allows for extra safe milk storage
  • Affordable option compared to competitors


  • You can’t really pump directly into the bags, which is a big letdown for some moms
  • Some of the bags may let out the infrequent leak due to potential manufacturing errors
  • A bit hard to store given their long and bulky shape

8. Milkies Breast Milk Storage Bags

If you want a leak-proof bag though, you should look no further than Milkies’ ones.

And if you’re a new mommy or are just lost as to how to properly store your milk bags, Milkies bags have the instructions printed right on them for a quick reminder.

These bags also feature reinforced seams to prevent any accidental leaks, as well as double zippers.

They’re also made from a plastic that’s completely free of BPA, PVC, and phthalates.


  • BPA-, PVC-, and phthalate-free plastic
  • Seal is double-zippered
  • Affordable
  • Leak-proof


  • Hard to pour out of the bag
  • Hard to open

Storage Tips

Here are some tips to help you safely store that liquid gold of yours.

  • Remember to wash your hands thoroughly before handling your baby’s milk. You don’t want to contaminate it and cause your little one all sorts of potential trouble.
  • Avoid mixing breast milk that was just pumped with a frozen batch. Keep them separate and use the milk up once you thaw it.

That’s why storing breast milk in smaller batches is paramount, so no ounce goes to waste.

breast milk frozen in storage bags for baby

There’s a reason why these bags don’t come in such high quantities.

  • Never refreeze breast milk after thawing it
  • Write down the date and time on the storage bag so that you know its shelf-life
  • Start with the oldest batch when feeding your baby
  • Freeze milk as soon as you pump it if your baby won’t use it right away

Storage Times

It’s completely safe to freeze breast milk for around 6 to 12 months.

If you prefer not to freeze your breast milk, here are some CDC-approved guidelines to follow.

  • You can keep freshly expressed milk at room temperature for up to 4 hours
  • Make sure that you place it in a closed container to avoid contamination
  • Use an insulated bag and wrap the bottle with a wet towel to keep it cool
  • Keep the milk in the fridge for up to 4 days – any more and it’ll start losing its nutritive qualities

Thawing Frozen Breast Milk

Storage breast milk in the side of refrigerator

  • Place the milk in the fridge for about 12 hours; this will help defrost it
  • Run warm water over it, but make sure it’s not hot water
  • Don’t let the milk thaw out naturally, since it’s best to use 2 hours after thawing
  • Throw away milk if you don’t use it after 24 hours of thawing
  • Never microwave breast milk to avoid losing its nutritional value


Breast milk is a very precious resource and it’s up to mommy to make sure to keep it safe and fresh.

Now, as you may have noticed, while many of these milk storage bags are similar, each of them have their strengths and weaknesses.

After all, what works for other mamas might not work for you or your baby.

READ NEXT: Can You Reheat Breast Milk More Than Once? 5 Tips For Pumping Moms

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