Lansinoh Breastmilk Storage Bags, 100 Count, Fast Freeze & Thaw, 6 oz

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.

I use this product to storage my breast milk in the freezer. I've tried this Lansinoh, the Medela pump and store, and the Babies R Us storage bags. Definitely the Lansinoh are the best. They have a good size and they really stay flat when you freeze them. It's easy to write the date, time, amount of milk, etc. on them. The material they are made with is the best so far. They are flexible, not to bulky and I can take the air out better than with the other brands.