Best Breast Milk Storage Bags (Buyer’s Guide & Reviews)

how long can refrigerated breast milk sit out

One of the hardest things a working mom has to do is to pump for breast milk. It takes a lot of time, energy, and dedication to get that breast milk ready for your little one. With all of the effort that is required to pump, you certainly want to make sure that you can store your breast milk safely. Which leads to the question: what are the best breast milk storage bags?

When you are looking for high-quality milk storage bags, there are tons of things you need to take into consideration. Luckily for you, all of that hard research has been done already! This article will show you some of the best storage bags on the market today, and help to guide you towards the best bag for your baby!

Best Breast Milk Storage Bags (Updated)



Bag Size





8 ounces



6 ounces



6 ounces



5 ounces



6 ounces



(*) Below, you'll find my detailed reviews, but you can also click the links above to see prices and read customer's reviews on Amazon.

Buyer's Guide

Breast is Best: Why Should You Choose Breast Milk For Your Baby?

watery breast milk

We have all heard the adage; breast is best. But did you ever wonder what exactly makes breast milk so wonderful for your baby? There are lots of reasons that breastfeeding is the absolute best thing for your baby. There are even a few ways that breastfeeding is good for the mother, too..

Benefits For Baby

Tailor Made Supply - If your baby is in a growth spurt, your body will increase your milk supply to meet their new demands. If they are sick, your body will change the makeup of your milk to help them fight off the sniffles. Once your baby starts to wean off of breast milk, your supply will decrease to meet their needs. However your baby needs to eat, your body will rise to the occasion!

Increased Health - Multiple studies have shown that breastfed babies are better able to fight off sickness than their formula fed friends.

Decreased Health Risks - Babies who are breastfed will also have a lower chance of developing chronic health problems, like allergies, type 1 diabetes, and IBS later in life than babies who were fed with formula.

Better Weight Gain - It is not a surprise that babies who drink breast milk gain weight faster than those who are formula-fed. After all, that is what they are supposed to be eating, and their mother’s body produces milk to meet whatever individual needs they might have.

Benefits For Mothers

how long can refrigerated breast milk sit out

Weight Loss - As long as your baby is nursing or you are pumping, your body is working overtime to produce the proper supply of milk. This means most of the calories you take in are going towards that goal, rather than settling on you and causing weight gain.

No Period - You will most likely not get your period back for as long as you are producing an adequate supply of breastmilk. Think of it as an extended vacation from your bothersome monthly visitor.

Birth Control - Since you will not be menstruating while you pump, you should not be able to get pregnant either. However, this is only true in about 98% of women, so be careful if you don’t want another baby quite yet!

Breast Milk Collection Methods

When you are collecting your breast milk, you will either need to use a manual or electric pump.

Manual - Manual breast pumps can only be used on one breast at a time and will only work if you have your hands free. This model from Ashtonbee is a great manual pump.

Electric - Electric breast pumps are the go to for lots of working mothers, since you can use them and keep working. This is a great model that will is compatible with either

Breast Milk Storage Solutions

You can either choose to store your milk in a bottle in the fridge or a bag in the freezer. Which one you choose depends on how soon you intend to use the milk once it has been pumped. Storage bags are the way to go if you want long term storage, and bottles if you want to use the milk in the next few days. For more insights into breast milk storage, feel free to check out this video.

Storage Bag Features To Keep In Mind

When you are searching for the best breast milk storage bags, there are several key features that you should keep in mind.

Size - If your baby eats a healthy helping of breast milk at every meal, you might want to get bags that can hold a higher amount than if your baby doesn’t drink quite as much. However, you certainly don’t want to have so much left over in a bag that the milk goes to waste.

Pump Compatibility - Lots of the bags on the market today will match up with most breast pumps, meaning you can pump directly into the bag, rather than into a bottle. This decreases the chance of a spill, which would ruin all of your hard work.

Sterilized - Since you don’t want to waste a single drop of your milk, make sure that you purchase bags that are sterilized against the growth of bacteria.

Closure - Good storage bags are easy to close. They should also stay shut once they are closed. The last thing you need is to try to thaw out some milk only to find that there was a leak in the bag.

Top Five Breast Milk Storage Bags

1. Mommy's Precious Storage Bags

The Good: Of all the bags that I have tried out, these Mommy’s Precious bags, which you can check out here, are the best. I like them because they are larger than other bags, with a capacity of eight ounces, which makes them great for oversupply or healthy appetites. They are sterilized and easy to seal. When you are ready to open them, you simply need to pull the tab at the top, and the bag will rip cleanly every time.

The Bad: This might only be a problem for me, since I have never been able to transfer milk without spilling a little of it, but you can’t pump right into these bags. While certainly not the biggest deal, it is something worth taking into consideration.

The Long and Short of It: The biggest bags that money can buy, these bags are pre-sterilized and feature a double zipper to better seal up your precious milk. When you are ready to use it, simply rip open the bag and get started feeding!

2. Lansinoh Breastmilk Storage Bag

The Good: Lansinoh is one of the most highly regarded names for breast pumps and breast milk storage and I have always liked using their product. That’s why I’m not surprised that they have created some of the best milk storage bags on the market. Their bags, which you can purchase here, are made of high quality, double walled, plastic, decreasing the likelihood of a spill or a leak.

I love the fact that you can pump right into the bag! Like I said before, I always spill a little, and this will save time, money, and a bit of sanity since you won’t need to worry about spilling milk.

The Bad: While I love the fact that you can pump directly into the bags, they are not without their problems. Storing them can get a bit tricky, since they need to lay down. I have never had any leaks while trying them out, but I was extremely careful to be sure they they were sealed properly. As long as you double check the double zipper you shouldn’t have a problem.

The Long and Short of It: These Lansinoh bags are time and milk savers. Since you can pump directly into the bag, you have fewer chances for spills. Just make sure they are sealed properly before you put them away for storage, however, or you might have some leaks.

3. NUK Seal N Go Breast Milk Bags

The Good: These bags, which are produced by NUK, are another high-quality product. They are sterilized for you, making it possible to start using them right out of the box. While they have some nice features, the part that I like about these bags are their double-thick sides, top, and bottom. This helps to make them exceptionally durable and decreases the chance of a spill or leak.

The Bad: While these bags are reinforced to prevent leaks, you still need to transfer your milk from a bottle into the bags, which I have always found to increase the risk of spills. I also had a hard time reading some of the numbers on some of the bags, which made accurate measuring difficult.

The Long and Short of It: These reinforced bags, which you can find here, are unlikely to leak. However, since you cannot pump directly into the bag, you might spill some of your milk.

4. Medela Pump & Save Breastmilk

The Good: Medela is a well-known breast pump maker, and my personal pumping favorite. I love that you can use these bags with whatever model of pump you have, regardless whether it is new or an older model. Even though my pump is a few years older it worked just fine with these bags.

The Bad: The only real problem with these bags, I found, is that they are a bit on the small side. I have always had a large supply of milk, and I would be afraid of overfilling these bags. My babies also always drink a lot during their sessions, and these bags probably would not hold enough to satisfy their hunger.

The Long and Short of It: These bags, while on the smaller side, will work well with any Medela pump. Since you can pump directly into the bag, you will save plenty of time and effort, making sure that your milk is stored safely. If you are interested in these bags, feel free to check them out here.

5. Philips AVENT Breast Milk Storage Bags

The Good: I love that these bags have an exceptionally wide mouth, making the pouring in and out of milk a simple and safe experience. These bags are also designed to be stored standing up. This is achieved with a double thick design and wider bottom. I also loved the fact that you can store them standing up, decreasing the possibility of leaks dramatically.

The Bad: While these bags from Philips seal up nicely and store well, I had a tough time tearing them open once the milk was ready to be used. While I easily solved this problem by using a simple pair of scissors, I lost a bit of milk to spills while I tried to tear the top off the first time.

The Long and Short of It: Easy to fill and easy to empty, these bags, which you can check out here, are made to be stored standing up, decreasing the likelihood of a spill or leak. Just be careful when you decided to open them up, however, as the tear off top might not tear off easily.

And The Winner Is...

Out of all the storage bags that are on the market, I think the Mommy's Precious Storage Bags are by far the best breast milk storage bags. Even though I worry about spills, these were easy to fill. They are large in size, and double-walled bags, which will help you to keep your breast milk as fresh as possible to keep your little one growing just right.

Be Sure To Store These Ideas Carefully!

While it takes a huge commitment in both time and energy to pump and store breast milk for your baby, it will be well worth it in the end. Breast milk is designed to provide your little one with everything that they need to get started on the right track to lead a healthy and happy life.

While pumping can be a pain, you don’t want to make it extra hard by using inferior storage bags that might jeopardize the quality and safety of your breast milk. Try to look for sterilized bags that can hold all the milk you need, while remaining leak proof.

Hopefully, I have helped you to find the bags that work best for your family. If you have any questions or comments, please leave a comment below. Good luck, and keep on pumping!

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Veronica Mitchell

Hi! My name is Veronica Mitchell. I am a mother to two adorable little girls and a handsome little boy. I spend my days caring from my children, packing lunches, reading aloud, kissing boo-boos, and working as the Chief Editor of My Parenting Journey. On this site, you will find friendly advice, expert suggestions, and guides to all shopping for the products you actually need.

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