Babies Breastfeeding Pumping & Storing Print What to Know About Breast Milk Storage Bags By Donna Murray, RN, BSN Updated March 31, 2019 Product Disclosure Medically reviewed by a board-certified physician More in Babies Breastfeeding Pumping & Storing As Baby Grows Challenges For Mom Baby's First Year Growth & Development Health & Safety Everyday Care Formula Baby Food Preemies Postpartum Care Gear and Products View All Your breast milk is an incredible fluid full of the nutrition your baby needs to grow and immune-boosting properties to protect your child from illness and disease. When you decide to pump and store your milk for your child, you want to choose a storage container that will protect it. Breast milk storage bags are one option. Keep reading for information about breast milk storage bags, the pros and cons of using them, and six brands to consider. Breast Milk Storage Bags Breast milk storage bags are plastic bags made specifically for the collection and storage of breast milk. They are designed to withstand the freezing, storing, and thawing process. Since they are pre-sterilized, they're convenient and ready to use right out of the box. When choosing a brand of storage bags, you should look for reliable seals, and quality construction to prevent leaks. With some brands of breast milk storage bags, you have to pump your breast milk into a separate container and then transfer it into the bag to store. Other brands come with a convenient adapter that allows you to pump directly into the bag. Of course, with either option, when you're ready to thaw out and use the breast milk stored in the bag, you'll still need to transfer the milk from the bag to a bottle for your baby. Can You Use Plastic Sandwich Bags or Bottle Liners? Ordinary plastic sandwich bags may look similar to breast milk storage bags, but they are not the same. Sandwich bags are not made to store breast milk. They are not as strong as breastmilk bags, and they are more likely to break during the freezing and thawing process. It may seem more expensive to buy plastic bags designed specifically for breast milk storage, but it's worth it. Breast milk storage bags are stronger, more reliable, more convenient, and safer than bags that aren't meant for the storage of breast milk. Bottle liners are great for delivering breast milk to your baby, but they aren't so great when it comes to storing your breast milk. Bottle liners are not made to withstand the freezing, saving, and thawing of milk. They aren't as strong as breast milk bags, so they are also more likely to tear and leak wasting your precious breast milk. Storage Bags Vs. Other Storage Options Plastic breast milk storage bottles, food-safe glass containers, and breast milk storage trays are other available storage options. There are advantages and disadvantages to each type of container. Here are the pros and cons of storage bags. Pros of Storage Bags Inexpensive Convenient Disposable Less bulky than other containers Milk thaws more quickly Cons of Storage Bags Not eco-friendly More likely to leak/break May not be able to pump directly into bag Benefits of Using Storage Bags Breast milk storage bags are usually less expensive than plastic containers or glass bottles. You'll spend less up front for bags. Bags are convenient and easy. Since they are disposable, you'll spend less time cleaning. If you're short on space in your fridge or freezer, bags have another benefit here over jars. They aren't as bulky as glass or plastic containers, so they take up less storage space in your refrigerator or freezer. One last thing to consider: breast milk storage in bags thaws out more quickly than milk stored in glass or plastic containers. This is a big plus when you have a hungry baby on your hands! Drawbacks of Using Storage Bags Breast milk storage bags are meant to be used one time. They cannot be washed and reused, so they aren't as eco-friendly as the other storage options. Plus, over time, the cost of buying new ones can add up. Plastic storage bags are not as strong as glass or hard plastic containers, so they're more likely to leak or break during storage. Not only is it messy, but any tear or opening can contaminate your breast milk. You cannot pump directly into all brands of storage bags. You may have to express your breast milk into a container that's compatible with your breast pump and then transfer the milk from that bottle into the plastic bag for storage. The extra steps can be time-consuming. 6 Popular Brands All the brands of breast milk storage bags below are designed specifically for the storage of breast milk. They are BPA (Bisphenol A) free, disposable, pre-sterilized, and freezer-safe. 1 Lansinoh Breast Milk Storage Bags Lansinoh Lansinoh Breastmilk Storage Bags hold approximately six ounces (180 ml) of breast milk. They have a leak-proof, double zipper seal to keep your breast milk securely in the bag. They lay flat in the freezer for easy, space-saving storage. 2 NUK Seal 'N Go Breast Milk Storage Bags Amazon The Seal 'N Go Breast Milk Storage Bags by NUK can hold up to six ounces (180 ml) of breast milk. With a double zipper seal, they guarantee that they are 100 % leak-proof. These bags have a stand-up bottom, so they can be stored standing in a row or stacked flat on top of each other. 3 Dr. Brown's Breastmilk Storage Bags Amazon These durable stand-up breast milk storage bags from Dr. Brown's are extra thick to prevent breaking or leaking. A double zipper seal makes them even more secure. Plus, a conveniently perforated top helps prevent spills and makes it easier to transfer the breast milk out of the bag. 4 Honeysuckle Breastmilk Storage Bags Amazon Honeysuckle Breastmilk Storage Bags are sturdy with a secure, leak-proof, double zipper seal. They have a gusseted bottom so they can stand up when they're full. They can also be stored in that upright position. These environmentally friendly storage bags are biodegradable and recyclable. 5 Medela Pump and Save Breastmilk Bags Amazon Medela's Pump and Save Breastmilk Storage Bags hold approximately five ounces (150 ml) of breast milk. These stand-up bags have a stand-up bags have a leak-proof zipper that's easy to close. They also have an oxygen barrier to protect the nutrients in breast milk during storage. Pump and Save bags come with an adapter that's compatible with Medela brand pumps so you can pump directly into the storage bag. 6 Ameda Store 'N Pour Breast Milk Storage Bags Amazon Ameda Store 'N Pour Breast Milk Storage Bags hold approximately five ounces (150 ml) of breast milk. These bags have an easy to close leak-proof seal and a unique spout that can be torn open when you're ready to transfer your breast milk to a bottle. The spout lets you easily pour the breast milk out of the storage bag without spilling it. A starter kit comes with a pump adapter that allows you to pump your breast milk directly into the stand-up bag. Disclosure E-Commerce Content is independent of editorial content and we may receive compensation in connection with your purchase of products via links on this page. Was this page helpful? Thanks for your feedback! Track your baby’s most exciting moments with our milestone checklist. Get it free when you sign up for our newsletter. Email Address Sign Up There was an error. Please try again. Thank you, , for signing up. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Academy of Breastfeeding Medicine Protocol Committee. ABM clinical protocol# 8: human milk storage information for home use for full-term infants (original protocol March 2004; revision# 1 March 2010). Breastfeeding medicine: The official journal of the Academy of Breastfeeding Medicine. 2010 Jun;5(3):127. Riordan, J., and Wambach, K. Breastfeeding and Human Lactation Fourth Edition. Jones and Bartlett Learning. 2014.