Best Breastfeeding Freezer Bags

Are you looking for the best breastfeeding freezer bags? Doctors across the world, as well as scientific case studies, have proven that it is better to breastfeed your baby for the first year of their life. 

This is because breast milk is packed full of natural nutrients that your baby needs to develop and grow. It also acts as your baby’s first antibiotic. Breast Milk has the necessary nutrients to help keep your baby healthy and ward off diseases that you may not know how to deal with.

If you need to go back to work, or you would want someone else to be able to feed your baby, then you will need to express your milk and give it to your baby via bottle. But how do you store the breast milk after you have expressed it? 

Freezer bags are the perfect way to do this. When looking for the best storage bags, you will need to think about what is important in a good quality bag. It is not all manufacturers that make the best bags. In this article, we take a look at the best breastfeeding freezer bags on the market and how you know you’ve got a good one.

In a Hurry?

Are you in a hurry and need a simple quick list to buy the best breastfeeding bags on the market today? There are a couple of factors that you will need to consider. Because several different manufacturers make these bags, it is important to make sure that you go for a reputable one. You can hear more about the company from online user reviews, or in person. Certain manufacturers have a reason why they are at the top of everyone’s list. 

Check on the durability of the bags to make sure that they do not burst when they are frozen. It is important to make sure that the bag is freezer safe. Can the bag withstand the city temperatures in your freezer without bursting? Make sure that they are made of the best material that is safe to put your baby’s food in it. 

It needs to be food-grade material. You also want to make sure that you get a bag that has a good seal that keeps the milk in and all contaminants out. You also want to make sure that the bag freezes flat rather than bulging. This will help you store more bags in your freezer as each frozen bag takes up minimal space. 

You can save more time, by finding a bag that allows you to pump directly into it, instead of transferring from one container to the bag after you have expressed your milk. Another feature that you need to check on, is the capacity of the bag. How much milk can it store and also does it have the capability to keep it fresh? Check on the instructions on how to thaw it and take the necessary precautions.

Our Favourite

We have done our research and found our top pick to be the breast milk storage bags from Lansinoh. These bags are excellent quality and BPA- and BPS-free.

Lansinoh Breastmilk Storage Bags

Lansinoh Breastmilk Storage Bags

These bags are made by a reputable company, and also allow you to pump directly into the bag, depending on the type of breast pump that you have.  We love it because it is a safe and versatile choice.

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Our Reviews

NUK Simply Natural Seal n’ Go Breast Milk Bags

NUK Simply Natural Seal n' Go Breast Milk Bags

One of the most important features that need to characterize good freezing bags, is the ability to not leak. You don’t want to spend time expressing milk only to have it covering the freezer floor. 

Liquids expand when they are frozen, therefore putting the milk in plastic that is durable enough and won’t break when the milk freezes. Quality is key in choosing the best freezing bags. The seal on these bags is leak-proof and will keep the milk safely sealed in and fresh as well. 

The rounded bottom on the bottom of the packet will stop the bag from leaking. Each bag has a pouring spout that is specially designed to not spill. This is great especially if you will be doing the pouring in a place where you do not have the luxury to clean up after yourself like in a public space.

These bags keep the milk fresh, thanks to the improved oxygen barrier. you can use the bags immediately when you buy them because they come pre-sterilized. The material used to make the bags is BPA free.


  • They come pre-sterilized
  • They are durable
  • The seal in freshness.


  • It’s hard to pour out without spilling

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Lansinoh Breastmilk Storage Bags

Lansinoh Breastmilk Storage Bags

Of all the breastfeeding product manufacturers, Lansinoh has a good reputation for making the best breastfeeding products, including freezing bags for your breastmilk for later. This bag can keep your milk safe and uncontaminated. 

It is made of very strong material and has a double zipper for closure and the perfect seal. You will not have any issues with leaks or bursts. The bags are pre-sterilized and they have no NPA or BPS. 

These bags are also a great buy, as they allow you to pump directly into them, saving you much needed time. When you freeze them, they freeze flat, which means that you can stack more of them in the freezer. 

You can store 6ounces of milk in the bags and you can also recycle them. These bags will also thaw out very nicely, which is important. You want to make sure that the nutrients are not tampered with or compromised, and these bags will keep everything intact.


  • They are made of non-toxic and very strong material
  • They are made to last as the material is strong
  • You can store the bags more efficiently as they freeze flat rather than bulge up.
  • The closure seals in all the nutrients and makes sure to keep all the contaminants out
  • It has an easy to write on the label
  • You can pump directly into the bag


  • There are some counterfeit bags sold on the market, so be careful and make sure that you are buying the real deal.

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Brown’s Breastmilk Storage Bag

Brown's Breastmilk Storage Bag

Dr. Brown’s breastmilk storage bags are a great buy thanks to their many great features. The bags are durable, which is a very becoming and necessary feature for bags that will be frozen. The design has extra trimming around its sides so that the entire bag is cushioned if you drop it. 

To seal them, the bags have a double zip-lock seal. With these, you are guaranteed that the freshness is sealed in, and the bad stuff stays out. Your breastmilk will be kept as fresh as when you first expressed it. The bottom part of the bag is gusseted, meaning that it can be made to stand upright in your freezer. These bags can take up to 6 ounces of milk. 

Another thing that these bags have going for them is that they are easy to use, they come pre-sterilized meaning that you will not need to worry much about making sure they are clean and safe before you put the first batch of milk in. You can use them immediately. Also, they are very easy to write on labels.


  • They are easy to use
  • You can stand them up in your freezer
  • They are durable
  • They come ready to be used
  • They are safe and non-toxic


  • The plastic is quite hard and can be difficult to fill. 

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Philips Avent Breast Milk Storage Bags

Philips Avent Breast Milk Storage Bags

These bags are secure and will surely keep your breast milk safe and sound. Thanks to the double zipper, you know that there will be no leaking happening. The bag is made of strong and durable material that is BPA free and also comes pre-sterilized. This means that you can immediately use the bags as soon as you use them. 

When you have filled the bag, it is very easy to set up in the freezer, where it can stand on its own. It opens wide and is easy to fill. It has a wide neck which makes it easier to pour. The sides are reinforced and this creates a sort of capsule for the milk, keeping it safe as it is in the freezer. This bag is 25.6 cm high and 9.9 cm high. 

You can only use this bag once. This can be costly in the long run.


  • They are easy to use
  • The bags are durable
  • It is reasonably priced, these are some of the most affordable breastfeeding freezing bags on the market


  • The bag is made for one-time use only. 
  • You can not pump directly into the bag.

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Buyer’s Guide

The great thing about your milk is that it changes as your baby grows, meaning that your baby gets the right nutrients when they need them. You will notice that baby formula making companies try to replicate this by having different grades of the formula for different stages of your baby’s growth. But this leaves room for error. If you can, it is better to give your baby breast milk for at least 6 months. The longer you breastfeed, the better it will be for your little one. 

How do I thaw breastfeeding freezer bags?

Now that you have been able to freeze your breast milk to store it for another day, the question becomes, how do you safely thaw the bags out? You can do this by running the bag under warm water, or placing it in a bowl with warm water. 

You want the milk to be at room temperature. Whatever you do, do not put it in the microwave. Once it has been thawed, make sure to use it within the next 24 hours. 

When you need to thaw your milk, always remember to use the milk that you would have stored first. The rule of thumb, is first in, first out. When you know that you want to thaw some milk, you can remove it from the freezer overnight and put it in the fridge. 

The drop in temperature will help you thaw the milk. Once you have thawed the breast milk, always make sure that you use it and not re-freeze it.

How long can I keep my breastmilk in the freezer for?

Breast Milk is perishable. You can keep freshly pumped milk out of the fridge, at room temperature for four hours before it spoils. You can keep it in the refrigerator for up to four days. If you want to keep it longer, keep it in the freezer, where it can last up to 6months

What should I do before I express milk?

Expressing milk will give you the opportunity to give your baby breast milk even when you are not around. You will need to make sure that you take the necessary precautions to ensure that your baby’s health is not compromised by the way that you express the milk. 

Make sure that you sanitize and clean your hands properly with soap and water or an alcohol-based sanitizer. You want to make sure that there are no contaminants that find their way into your baby’s milk. This is a potential cause of diseases that you don’t want to be dealing with. 

You can either express the milk by hand, or you can use a breast pump. To do use a pump, make sure that it is also properly cleaned and sanitized before you begin to express. 

How do I store breast milk?

It may seem like all you need to do is put the expressed milk in bottles and store away in the fridge, as you would do with milk from the store. But on the contrary, when it comes to your baby’s milk, you will need to make sure that it is kept clean, fresh, and safe for your little one. 

In order to do this, you can take your pick from any of the breastfeeding freezing bags that are available on the market.  Just make sure that they are free of any harmful toxins and also that they are made of food-grade materials. You also want to make sure that the container you choose to store the milk in can be sealed tightly. 

The seal is important in making sure that the milk stays fresh and keeps oxygen out. If you are storing the milk in a bottle, make sure that the lid is made of glass or plastic. Make sure that you avoid bottles that have recyclable symbol number 7. This shows that it may have BPA containing plastic. 

Whatever you store the milk, in, make sure that it is food grade quality. This way you know that it is not harmful in any way. You can np store your breast milk in disposable plastic bags or any container not made for breastmilk storing. Don’t take any chances.  

Using the right storage container, label the packet clearly. The reason for this is so that you can keep track of when the milk was expressed, and how long you have until it spoils. If you want to keep it fresher for longer make sure that you keep it well frozen. 

Its shelf life is shorter in the fridge, and putting it on the fridge door is not a good idea either. Putting it on the door will expose the milk to temperature changes that will make it spoil faster than it should, as you open and close the door. 

Your little one can only drink so much milk at a time. Therefore it is important to make sure that you only express and store as much as you think you will use at a time. Also make sure that you leave about an inch of space in the bag or container, to make sure that the milk has room to expand. 

How can I travel with expressed milk?

If you will be traveling and won’t be able to breastfeed, or if your baby will be traveling with someone else who is not you, you can express your milk, and store it in bags, then place in a cooler bag that has frozen ice in it. It will keep the milk fresh for at least 24 hours. 

How do I feed my baby the thawed out breast milk?

Once you have thawed the breast milk out, and it is at room temperature, you do not need to further warm it up. Think about it this way, your breast milk does not come out of your breast heated, it is at just the right room temperature. Do not warm the thawed out breast milk on the stove or in the microwave, under any circumstances. 

When you place the container or bag with the milk in water, make sure that it is not searing hot. Just warm will do. When you are satisfied that it is at the right temperature, mix it around a bit so that it mixes properly. The fat in the milk may have separated. An unfinished bottle can be kept for two more hours, then it needs to be discarded. 

How do I clean the baby feeding bottle? 

It is important that you clean your baby’s feeding utensils clean and sanitized. This will save you a lot of trips to your pediatrician. The first thing you want to do is take the feeding bottle apart. 

Then rinse the individual parts separately under clean running water. Once you have done this, you can put the bottle in the dishwasher on a very hot cycle. You can then remove it and dry it thoroughly. Allow the bottle to air dry.  

If you are washing your bottle by hand, first make sure that your hands are clean. Wash them with soap and running water for at least 20 seconds. Then wash the individual parts of the bottle, making sure that you don’t set the bottle in the sink. It is better if you have a special basin or dish that you wash your baby’s feeding utensils with. 

Scrub the bottle with a clean brush that you only use on the baby’s utensils. To wash the nipple, squeeze water through it. Use soap and clean water. When you are done, rinse the bottle and allow the different parts to air dry. 

Do not use a common dish towel to dry the bottle or any of the parts, to avoid transference of germs. 

Final Thoughts

Breastfeeding is a great and healthy choice to make for your little one. You can make sure that your baby always has breast milk, even when mummy is not around, by expressing milk and storing it in the right bags, that are safe and approved. 

Buying a breastfeeding freezing bag means that you will have to think about various factors that can help influence you making a better decision.

Whilst it is not about being an expert in baby products, there are certain things that you have to know about when it comes to taking good care of your baby. This includes knowing the materials and impact that the bags you want to get will have on your baby. 

There are various manufacturers that make breastfeeding freezing bags, but it is not all of them that are the absolute best. You need to be diligent in making sure that you are getting the right bags. They will be in contact with your baby’s food and can cause illnesses if they have even the slightest contaminant. 

If you are not careful, you may just negate all the efforts and benefits of breastfeeding. The whole point is to make sure that your baby drinks uncontaminated, healthy milk. Freezing bags, give you the ability to always make sure that your baby always has breast milk. 

Also, think about the impact that your bags will have on the environment once you are done with them. Ask about whether the bags are recyclable or not. Your baby deserves the very best, and your diligence can get them that.

Find your best fit. Happy shopping!

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