I’d give zero stars if I could. I’m so frustrated with these milk storage bags as they continue to all leak. I’ve just started to thaw out the freezer milk since returning back to work from maternity leave and almost every one that I’ve thawed out has leaked everywhere like this! I have worked too hard trying to save a good freezer full of milk, now SO much has gone to waste.

These work okay, unfortunately the last time I purchased I got a few leaky bags that weren't able to tolerate the freezer. But I like the size of these, I can easily put in over my flanges without needing an adapter. However if you're transferring or by chance leave it on the counter for a second without sealing it there's a good chance it will fall over. I've lost quite a bit of milk this way.

The bags do the job but are very flimsy. If you are expecting for the bag to stay propped upward by itself while you store in the fridge you’re better off with the Madela brand. Like I said they do the job and don’t feel too “thin”. I will buy again for sure.

I used these storage bags for breastmilk with my last two babies. The bags are not flimsy and are stand up to use. They work OK with my breast pump. They seal well and the measurements are easy to read. I have also placed these bags in a larger freezer storage bag for future needs.

Lansinoh 6oz Breastmilk Storage Bags stand out for their high quality , durable, BPA free material, providing safety and peace of mind. Their design allows for quick and even thawing, helping preserve the milk's nutrients. They are hygienic, pre sterilized, and intended for single use, making handling simple and convenient. Additionally, the secure seal effectively prevents leaks and spills, even during transport or when stored flat.

These bags are really sturdy and freeze flat. I've purchased other brands where the corners have been sharp and would rip though the gallon freezer bag I store them in but these don't do that and are great! I've purchased at least 30 boxes of these so far and will keep repurchasing :)

These bags are excellent quality and the zip lock is so reassuring and doesnt require me to fuss around alot to get the seams lined up. The only downside is the bags are super flimsy and wiggle while you try to pour milk in. This has caused me to spill milk all over my counter as I've been trying to fill the bags up. Love the flat storage and zip lock, as I said though.

This has been the trust beand of milk breast storage bags for me for the past 17 years. occasionally the perforations and complete cut through so it makes it annoying to remove the plastic piece you toss. but other than that I've never had a problem with leaks or rips

The storage bags are decent. I like that they have an area for my name, volume, date/time. However, they are more flimsy than I am accustomed to and I have had a bag tip over because of this. Overall, I would buy again for convenience sake but they definitely aren’t my favorite bags.

I use these bags to hold pumped breastmilk in the freezer. I have not had any problems with the bags' integrity holding up to various temperature conditions. I don’t, however, defrost the milk in the microwave, which is not recommended anyway (creates hot spots in milk), so I wouldn’t know how well the bags would do in that situation. I've only held frozen milk in these bags for about a month at a time before I would need to make a bottle for hubby to feed the baby. Breast milk can be frozen for up to 6 months, so I would need to do an experiment to see how well the bags holds up. My only concern is when pouring the milk from the bag into a bottle, I need to be careful of where the milk touches the non-sanitized part of the bag's opening. I tend to wash the opening flaps first before opening the bag. Lastly, knowing how much milk is being stored in the bag is better determined by a baby's bottle set on an even flat surface. The level read on the bottle is always different than the level read on the bag.