Lansinoh Breast Milk Storage Bags, Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding - 100ct/6oz
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Lansinoh Breast Milk Storage Bags, Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding - 6oz
4.5 out of 5 stars with 10799 ratings
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Guests are saying
These breast milk storage bags are highly praised for their durability, leak-proof design, and convenience. Guests appreciate the double seal that ensures freshness and the ability to freeze them flat for easy storage. Many find them easy to use, with a wide opening for pouring milk. However, some guests have noted issues with sizing accuracy and occasional leaks, particularly with newer designs. Overall, they are a reliable choice for storing breast milk safely.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.5 out of 5 stars with 10799 reviews
design: 3.05 out of 5
easy to clean: 3.91 out of 5
safety: 3.34 out of 5
63% would recommend
809 recommendations
3 out of 5 stars
30 March, 2026Verified purchase
(no review title)
The bag works fine to store your milk however I loose some milk when pouring in from my wearable because of the oval flaps. No matter how I position it they always get in the way and makes a mess, some losses have been more than others. I wish it had a better design. These are definitely better for storing milk directly in them when pumping from a wall pump.
4 out of 5 stars
20 March, 2026
originally posted on influenster.com

Convenient to use, however I’ve had a few split or
Super convenient and easy to use as a mom, however I have had a few leak or split which is frustrating when thawing. They freeze easily when laid down and easier than others to get the bubbles out.
5 out of 5 stars
18 March, 2026
originally posted on lansinoh.com
No adapter needed with my Spectra
These bags are great for storing my expressed breast milk while I'm at work. They fit on my pump flange perfectly without needing an adapter. The only downside is that some of them leak just a little bit. So I freeze them in a standing position instead of flat.
5 out of 5 stars
15 March, 2026
originally posted on influenster.com

Best milk storage bags
I love these bags. They are affordable, easy to fill, easy to pour from, freeze flat. I have used hundreds and never had a single one leak. The material is good without being too thick. These protect my milk well in the freezer to keep it ready for baby!
1 out of 5 stars
15 March, 2026
originally posted on lansinoh.com
Poor quality
Just started pulling my freezer milk out and 3 of the 5 bags are broken.
1 reply from Lansinoh Support team - 15 days ago
Thank you for sharing this feedback on our Breastmilk Storage Bags. We're sorry to hear about your experience with them. Because the performance you describe is not typical, we would like to investigate the product you received. Please be on the lookout for an email to the address you used to create this review. We look forward to hearing from you.
1 out of 5 stars
15 March, 2026Verified purchase
Poor quality.
I just started getting into my freezer supply. 3 of the 5 bags I pulled out so far are broken.
5 out of 5 stars
5 March, 2026
originally posted on influenster.com

The best breast milk storage bags
My favorite of the breast milk storage bags. When not in use it comes and stores flat - when filled with milk, they’re pretty leak proof and stack nice and easy in the fridge. The rectangular shape makes a big difference.
5 out of 5 stars
1 March, 2026
originally posted on influenster.com

Perfect storage
These bags are perfect for storing milk to add to bottles later! The size is nice and the texture of the bags are a lot better than the ones I’ve used in the past. They’re easy to store, do not take up a lot of room and have perfect spots to write down time and date.
4 out of 5 stars
1 March, 2026
originally posted on influenster.com

Easily store in the freezer, no pour spout for mil
These storage bags have worked great for my nursing journey! They can hold quite a bit of milk although I wouldn’t recommend overfilling it because it definitely expands the longer they’re stored frozen. I prefer the thinner design of these bags as opposed to thicker because I feel like they store better long term. I found it easy to get all of the air out of the bag each time and the ziplock stayed sealed. One of the negatives I have is about the measurement guide being off but honestly just about every breast milk storage bag is that way. The measurements just never line up properly with what the bottle will say after a pumping session. It is almost always off by at least 2 oz. For example: what you would be 4 oz in the bottle will measure as 6 oz or more after being poured into the bag. These are also missing any type of pouring spout to get the milk out easier after warming.
4 out of 5 stars
27 February, 2026
originally posted on influenster.com

Great for milk storage, easy to defrost
I liked the flexible plastic of these bags, it makes defrosting easier. It does make pouring into the bags a bit difficult, but it froze easier too with the malleable bags. I haven't encountered any spills using these bags.
3 out of 5 stars
26 February, 2026
originally posted on influenster.com

Leaky
The bags are easy to fill and seal but when thawing i had several that leaked and caused me to lose all of that milk. Had to start thawing in a huge container to make sure it didnt spill out of the leaks.
1 reply from Lansinoh Support team - 1 month ago
We appreciate you reaching out and are sorry to hear about the issue with your Milk Storage Bags. What you are experiencing is not normal, so we would like to be able to troubleshoot and best assist you. Please be on the lookout for an email from us to the email address you used to create this review. We look forward to helping you resolve your issue!
5 out of 5 stars
25 February, 2026
originally posted on influenster.com

Great Bags for milk! 🍼
These bags are so great! They have great measurements on the side, secure default and keep milk perfectly frozen! 🍼The material is sturdy and they’re easy to pour out. Highly recommend!
1 out of 5 stars
24 February, 2026Verified purchase
(no review title)
This are awful. They’re so thin and then collapse in your hand while trying to pour from the pump. I’ve lost so many ounces because of it. They also don’t sit upright because they’re so thin
1 reply from Lansinoh Team team - 1 month ago
We appreciate you reaching out and are sorry to hear about the issue with the Milk Storage Bags. For the quickest and most effective support, we recommend contacting our customer support team directly at customerservice@lansinoh.com or by calling 1-800-292-4794. They’ll be able to assist you with troubleshooting and resolving the issue. Thank you for understanding!
5 out of 5 stars
24 February, 2026
originally posted on influenster.com

Favorite
These were my favorite breast milk storage bags of all time. They were very easy to use and they froze very flat. The double seal was great and they were very affordable.
5 out of 5 stars
22 February, 2026
originally posted on influenster.com

I love these bags
These are some of my favorite milk bags! The qualitybis really good. The material is streng and the nilk is not linking.
4 out of 5 stars
20 February, 2026
originally posted on influenster.com

Some flaws but otherwise great product!
These are some of my favorite milk bags! They are amazing quality and hold a lot of milk. The only thing I don’t like is that sometimes it pours the milk out weird and I’ve lost milk for that reason. Other than that, they’re great!
5 out of 5 stars
20 February, 2026
originally posted on influenster.com

Best Milk Bags Ever
These are my favorite bags for milk storage. They have the ability to lay flat, no issues with leakage onto other bags/the freezer. Due to them laying flat they thaw pretty quickly.
3 out of 5 stars
20 February, 2026
originally posted on influenster.com

Large capacity
The bags are a good size. The plastic it's made out of in my opinion is a bit thin! I do like how they freeze flat when laid flat. They store nicely. But unfortunately because the plastic is thin I do have bags that leak when I thaw them out! They're also easy to label and hold a decent amount of milk.
1 reply from Lansinoh Support team - 1 month ago
Thank you for sharing this feedback on our Breastmilk Storage Bags. We're sorry to hear about your experience with them. Because the performance you describe is not typical, we would like to investigate the product you received. Please be on the lookout for an email to the address that you used to created this review as a member of our Customer Service team will be reaching out.
2 out of 5 stars
19 February, 2026
originally posted on influenster.com

Not for Me
Although these are super popular they did not work for me. These are my least favorite storage bags. They’re thin and flimsy. Very easy to spill milk out of and hard to get air bubbles out. Now they do lay flat and save room in the freezer, but I wouldn’t purchase again.
1 reply from Lansinoh Support team - 1 month ago
Thank you for sharing this feedback on our Breastmilk Storage Bags. We're sorry to hear about your experience with them. Because the performance you describe is not typical, we would like to investigate the product you received. Please be on the lookout for an email to the address that you used to created this review as a member of our Customer Service team will be reaching out.
5 out of 5 stars
19 February, 2026
originally posted on influenster.com

No leaks freeze flat easey pour
I've used these my whole pumping time and they hold milk great never had any leaks. Freezes flat nice and easey to pour especially into lansinoh bottles cause the top is wide