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No one knows dedication like a pumping mom. Protect every hard-earned ounce with Lansinoh super strong Breastmilk Storage Bags. Safely freeze and store your breastmilk with reinforced double sealed side seams and a double zipper for ultimate protection. Presterilized for safe storage and BPA/BPS free. Also, simplify your routine and pump directly into the bag. For nearly 40 years, new mothers have trusted Lansinoh to support and care for them while they enter the messy magic of motherhood. Born from one mother’s realization that birthing people often go without the support they need and deserve, Lansinoh proudly stands with mothers all over the world. Our journey started with award winning, doctor recommended HPA Lanolin Nipple Cream: today, we offer a comprehensive collection of solutions to help new parents navigate pregnancy, birth, breastfeeding, and pumping. Our product range includes organic nipple balm, disposable nursing pads, washable nursing pads, breastmilk storage bags, manual breast pumps and double electric breast pumps, postpartum essentials, baby bottles, and more. Lansinoh products are available in more than 70 countries and the company is committed to being climate neutral by 2030.
SUPER STRONG- Designed with double sealed side seams and a double zipper to protect and freeze breastmilk
SAFE BREASTMILK STORAGE- Our storage bags are presterilized and BPA/BPS free with a tamper-evident, fully sealed tear-away top for safety
SAVE TIME- Pump directly into the bags using your Lansinoh breast pump or most major pump brands using our Lansinoh pump-into-bag adapter (sold separately)
EASY TO USE- Each bag has a large write-on label at the top plus a convenient pour spout
COMPACT STORAGE- Lay flat to safely freeze; Stand in the fridge for compact, easy storage

Best milk storage bag
By far the best milk storage bag. I tried the medela ones, but they were to hard to open and zip shut. This one was super easy and had a double seal which gave reassurance that it didnât leak. Also when pouring out the milk into the bottle, the long spout at the top makes it easy to pour so thereâs no spillage.
Best one
Best milk storage bag! Easy to open and seal
Does not leak or break. Works great.
I have heard several horror stories of bags not sealing properly or saying that they will hold a certain amount of liquid and then bursting when frozen but with this brand, I have never experienced this (despite slightly overfilling the bags a few times).The bags have 2 seals where they close which gives some added confidence as well.When filling the bag, the design as the bottom helps because it allows the bag to sort of stand on its own which helps with pouring the milk into the bag.I have only had one kid so far but the quality and price is very reasonable so I will continue to buy these bags with my future kids as well.
Always reliable
Easy to use and always stay closed. Also easy to write on. Have tried other brands that came with pumps and had to buy these instead.
Never had a leak
These milk bags stand up nice to fill. They never leak. If layed flat to freeze they store very nice with others. I have never had one leak. Also, for being a baggy design, they pour into a bottle quite nicely. Definitely my go to breast milk storage bag. U can also freeze homemade baby food in them
Great for storage but bad at pouring
Great storage bags for milk and seal incredibly well, the zipper is very strong. The BEST part about them is they fit directly onto my breast pump so I can pump directly into the bag. My only gripe is that they donât pour very well. Itâs not intuitive and itâs easy to spill. They need to change that design.
Favorite product
Great price and seal. Easy to use. The accuracy of volume measurement on the bags is totally off and unreliable, though, so measure milk in pump or measuring device for accurate labeling.
Very good
Love it
I used the twist pouches right after giving birth, and then I tried these and am so glad I made the switch! While the twist pouches have a plastic twist-on cap which makes it easier to pour in and out of, these Lansinoh bags lay super flat and have a double zip to ensure no leakage in the fridge or freezer. I pump into plastic bottles first then pour them into the storage bags with no problem. (And I do it in the middle of the night with barely any light)Plus there is a nifty little tab to write the date, volume, your name and time you pumped. Once you lay them flat to freeze, theyâre super easy to store, and even easier to thaw. Because the bags are so thin, it thaws and warms extra fast. My only wish is that it were a little easier to pour into bottles without spilling.
I’ve used a handful of different brands. THESE ARE THE BEST!!! I use the Medela adapter piece and just cut a tiny slit in these bags so I can pump straight into them. The ziplock snaps shut super easy and these lay flat in the freezer. And if you’re an over producer like me, you don’t have to worry about the bags being too small. These bags are big and durable
Good price and work great for storage of breastmilk. They freeze super flat. Only have occasional leaks from the bags when I defrost them, but I always defrost in a Tupperware just in case so that it doesn’t leak all over the fridge.
We use these as directed and have had no issues with leaks. We don’t fill above the max line, and freeze them flat before storing (and thawing) upright. They do the trick, and we’ve purchased these several times, from Amazon and locally. Highly recommended!Update: I’ve noticed these leak if I’ve dropped a full frozen bag. It’s easily addressed by thawing in a container in the fridge or counter…or not dropping the frozen packets. However, I’ve poured boiling water over these to thaw, and they hold up fine, so I’d still consider this a 5 star item.
If youâre a pumping mama or know someone who is, these are a must. Hands down the best milk storage bag out there. Easy to use, double seal works great, and I donât lose milk by either spilling or the milk getting stuck in the bag when itâs transferred to a bottle for baby. Third kid and these are still my favorite!!