Best Breast Milk Storage Bags for Efficient and Safe Storage

best breast milk storage bags

Last Updated on November 8, 2023 by Avi Steen

Attention all pumping moms! Are you tired of struggling with breast milk storage and juggling bags that just don’t seem to keep your precious liquid gold safe? We know the best breast milk storage bags, the crème de la crème, that will make storing your baby’s milk a breeze.

Sit back, relax, and let us guide you through the world of efficient and safe storage for your baby’s milk.

bags on the market

Overview of Top-Performing Breast Milk Storage Bags

When it comes to breast milk storage bags, there are a few top dogs that rise above the rest. These bags have unique features designed to make your life easier when storing and pouring that precious liquid gold.

Some are great for long-term storage, while others are perfect for pumping directly into the bag. They also come in various sizes and capacities.

So you can choose the one that best suits your baby’s needs and your pumping routine.

Busy modern mums-to-be will find the best breast milk storage bags incredibly useful. They don’t take up too much space and keep the milk safe for a long time.

They’re also easy to use, even if you have a baby in your arms.

Our top picks include Lansinoh Breastmilk Storage Bags, Medela Breast Milk Storage Bags, and Target’s Up & Up Storage Bags. These bags offer a range of features, such as strong double-sealed side seams, double zippers, and compatibility with most major pump brands with adapters.

For size and capacity, Lansinoh bags can hold a generous 5 ounces, Medela bags offer a substantial 8 ounces, while Up & Up bags provide 5 ounces as well.

The record panel has a spot for you to jot down your baby’s name, the number of ounces in the bag, and the date and the time you pumped the milk – talk about organization! To pour from the best-for-storage breast milk storage bag, simply open a corner of the bag and pour into a funnel over the bottle.

Use a wider funnel than you think you need to avoid any spillage while pouring milk. Cheap funnels can be found at the dollar store.

These were a game changer!

Naturally, these top-performing breast milk storage bags have a few drawbacks. Some users reported that the label made it difficult to pour milk in and out, and they didn’t sit as flat as some other bags, such as disposable bottle liners.

But hey, nobody’s perfect.

Our Pick

Lansinoh Breastmilk Storage Bags: The Best Overall

Our top pick for the best overall option is the Lansinoh Breastmilk Storage Bags. Here’s why:

  • Made from food-grade plastic to ensure safety and quality
  • Easy-to-close double seal to prevent leaks
  • Lay flat for easy storage
  • Curved spout design for easy pouring without spilling

However, compared to other brands, Lansinoh bags are somewhat flimsy and aren’t as eco-friendly as reusable silicone bags. But they come with strong double-sealed side seams, a double zipper, and compatibility with most major pump brands using the included adapters, making them an excellent option for most moms and dads.


  • Capacity: 6 oz
  • Number of Bags: 50
  • Pump Compatibility: Lansinoh pump, or most major pump brands using the pump-into-bag adapter (2 included)


  • Strong double-sealed side seams
  • Double zipper
  • Compatibility with most major pump brands using included adapters Products are presterilized. They are also free of BPA/BPS.


  • Thinner than other brands, so milk may thaw faster


  • Ease of use: 4.5/5
  • Durability: 4/5
  • Compatibility: 4.5/5
  • Overall: 4.5/5

Medela Breast Milk Storage Bags: Best for Long-Term Storage

If you’re in search of the perfect long-term storage solution to store breast milk, Medela Breast Milk Storage Bags are an excellent choice. These breast milk bags are designed to store freshly expressed breast milk safely and efficiently.

They feature double zip protection to keep things secure, double walls to keep things safe, and a transport pouch for easy organization and cleanliness.

Given their ability to freeze flat and evenly, these bags ensure your milk doesn’t take up excessive space in the freezer.

The only downside is that the plastic is a bit thicker and stiffer than other options, such as silicone bags.


  • Capacity: 8 oz
  • Number of Bags: 100
  • Pump Compatibility: Medela breast pumps


  • Double zip protection to keep milk secure
  • Double walls for extra safety
  • Transport pouch for easy organization and cleanliness
  • BPA free


  • Thicker and stiffer plastic compared to other options


  • Ease of use: 4/5
  • Durability: 4.5/5
  • Compatibility: 5/5 (with Medela pumps)
  • Overall: 4.5/5
single use bags

Up & Up Storage Bags: Best Budget-Friendly Option

One pack of Up & Up Storage Bags typically includes 20 bags, which should be enough to store your entire wardrobe (or at least a decent amount of milk). The price can range, depending on the size and quantity you choose, but they are a wallet-friendly option.


  • Capacity: 5 oz
  • Number of Bags: 20
  • Material: 100% food-grade PEVA
  • BPA-free, phthalate-free, and latex-free

Target’s Up & Up Storage Bags present a quality option that’s also budget-friendly. These bags feature:

  • Thick plastic
  • Double-zipper lock
  • Slide zip closure for easy opening and closing
  • Made of 100% food-grade PEVA material, which is waterproof, lightweight, and durable
  • Stand-up and stay-open design for convenient filling
  • BPA-free, phthalate-free, and latex-free


  • Slide zip closure for easy opening and closing
  • Waterproof, lightweight, and durable material
  • Stand-up and stay-open design for convenient filling
  • Reusable and available in quart-sized and gallon-sized options


  • Generally hold less milk than other options


  • Ease of use: 4/5
  • Durability: 3.5/5
  • Compatibility: N/A (bag only)
  • Overall: 4/5

Choosing the Right Breast Milk Storage Bag

For secure and efficient storage of your milk, select the right breast milk storage bag. Factors such as durability, size, and material safety regulations should be considered.

Look for bags with extra-sturdy seals, double zipper seals, and ones that can stand up all on their own.

The standability test is key. I’ve knocked down and spilled my fair share of milk.

Additionally, consider the size and capacity of the storage bags, ranging from 4 to 8 ounces, depending on your baby’s needs and your pumping routine.

Durability and Leak Protection

In breast milk storage bags, durability helps to prevent bursting, prevent leakage, and withstand compression in the freezer. Look for bags with reinforced seams, double zippers, and leak protection to ensure your breast milk stays safe and secure during storage.

Size and Capacity

You must consider the size and capacity when selecting breast milk storage bags. When your baby is a newborn, 4-ounce bags may be sufficient. However, as your baby grows, you may need to switch to larger bags to accommodate their increasing appetite.

You can also just combine two 2-ounce bags, but from experience, that takes up a lot of freezer space.

Be mindful of your baby’s needs and your pumping routine when selecting bags, and try to fill each bag with an amount of milk that your baby will consume in a single sitting.

An image showing a mom wearing pumping-friendly nursing attire and holding pumping essentials such as a breast pump and milk storage bags

Material and Safety Standards

Make sure to choose storage bags that are BPA-free and comply with safety standards for breast milk storage. Material safety is crucial to avoid any potential harm to your baby.

When storing your breast milk, always label the bags with dates to keep track of which bags should be used first.

Wrapping Up

Lansinoh Breastmilk Storage Bags, Medela Breast Milk Storage Bags, and Up & Up Storage Bags are our top picks for the best breast milk storage bags, each offering unique features and benefits for different needs.

Lansinoh bags are the best overall option, while Medela bags excel in long-term storage, and Up & Up bags provide a budget-friendly choice.

When choosing the right breast milk storage bag, consider factors such as durability, size, and material safety standards.

Remember that the best storage bags will have strong seals, double zippers, and leak protection to keep your milk safe and secure. With the right storage bags, you’ll be able to store your baby’s milk efficiently and safely, making life a little bit easier for all the hardworking pumping moms out there.

So, go forth and conquer the world of breast milk storage with confidence, knowing you’ve armed yourself with the knowledge to choose the best storage bags for your baby’s precious liquid gold. Happy pumping!

Frequently Asked Questions

What is the best breast milk storage bag with a spout?

For a convenient, leak-proof storage option, Lansinoh Breast Milk Storage Bags are the top choice for breast milk storage. They have a double zipper seal and reinforced seams, plus their built-in pour spout makes it simple to transfer milk into bottles.

Does it matter which breast milk storage bags?

It’s important to pick the right breast milk storage bags to suit your needs – from food-grade plastic bags that can stand up in the fridge, to ones that will lay flat and stack when you’re stocking up.

Can you use Ziploc bags for breast milk?

Don’t use Ziploc bags for breast milk – they aren’t sterile and could leak. Instead, go with containers made of glass or hard plastic free of BPA, or specialized plastic liners designed for breast milk. It’s the safer, smarter choice!

How to use storage bags for breast milk?

Make transferring, handling, and storage of your breast milk a breeze with storage bags! They have gusseted bottoms to easily stand upright and spill-free spouts for easy transfer, while their self-standing design allows them to take up less space in your fridge or freezer. Just fill the bags with pumped milk, seal them, write the date and time on the bag, and you’re good to go!

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