The bags work great if you do not freeze your breast milk. When I freeze breast milk in the bags then thaw them out they leak! I always put them in some kind of baggie or container to avoid a mess.

The only thing these bags are consistently good at is LEAKING. It’s like 3/5 bags I thaw leak like crazy so I either can’t thaw them properly or water gets in the bag and causes me to waste an entire bag of breastmilk. It is insanely frustrating.

have used them for my last kid. I liked them. I haven't used them directly with the pump. I use bottle with pump and use the milk for my kid and if i need to freeze any then i ll use the bag. They lay flat nicely.

These bags are good! Ive been using them for 8 months now and haven't had any issues. I do love the fact that I can attach these bags to my Lansinoh pump when Im traveling. Instead of washing bottles.

These bags are great for milk storage. The are larger than other brands and I haven't had any issues with leaking. Compared to other brands, these are the most inexpensive as well.

I am very picky with what I use for my daughter and I feel like Lansinoh bags are great quality bags. I think I will only stick to this brand. Love it!

great to use, fits a ton in it and easy to store and transfer! only down side, is when pouring milk into the bags the label gets annoying by folding all over, wish they only had it on one side.

These bags are sturdy and work very well. I like that there is a perforated strip at the top that must be taken off before filling the bag. This ensures it's completely sanitary.

These are good bags the only thing is I’d like them more if they held a lot more oz than just the 6. I go through them quick but overall they’re good.

These bags are good and they are compatible with a different breast pump I have when it comes to pumping direct into the bag. I have seen leaks after sealing tightly.