Mason Bottle4oz Breast Milk Storage Jars (12-Pack) – Reusable Glass Baby Food Containers with Lid for Baby Formula & Breastmilk – Airtight, Stackable, Freezable

Using for breast milk storage, very useful. Tops fit other jars of the same size. I did have one break when I dropped it and one top crack. But they are pretty thick glass.

These jars are perfect for breastmilk storage. They don't leak and are easy to use.

Grateful to have an American-made, glass container to store pumped milk in for my baby. The lids and jars are easy to use together and do not leak when assembled properly. Great in the freezer or fridge. Also handy for storing baby food, or any other small thing you might need kept in the fridge.A few downsides…-The jar lids are advertised to work on all mason jars, but it can take a lot of finagling to get them actually sealed.-Before each use the inner ring needs to be pressed fully into the lid; if there is a gap it will leak (would be great if future iterations have silicone inside of the lid instead of 2 separate pieces!).-Due to the 2-piece design, sometimes the separated fat from the milk gets trapped on and under the ring; sometimes giving the jar a good shake before opening gets it all, sometimes not. When it doesn’t, I’ve taken to using one of my baby’s silicone spoons to get it off and back into the milk. Messy and an extra step when there’s usually a hungry, fussy baby waiting for it.-I have used these with the rings and nipples they make as a bottle for my baby. Those are another review (rings leak and nipples are too shallow/narrow for baby to get a good latch), but I found the jars to be frustrating to use this way because they are wide-neck and short, so it’s hard to get all of the milk to the nipple.Overall a good product, though! As baby is getting older and taking more than 3.5 oz/bottle I’m considering buying the set of 8 oz jars, so despite the frustrations they are still the best product I’ve found for the purpose.

Great little jars. The size is perfect and easy to open! Would make a wonderful gift for any new mom!

Great product, however I ordered a 12 pack of 4-oz jars and only received a pack containing 4 jars. Sent the seller a note and didn’t receive any response. Big bummer.

This is my second time buying this product and this time it’s totally different. The package now says made in China. The lids are lower quality and flimsy. Now I don’t know if I can trust that the plastic is still non-toxic because it’s so different that what’s pictured… what a scam. I’ll be returning!

They are super cute, easy to use, great for freezing milk or keeping it in the fridge the only problem is I only received 4 out of the 12 pack.

Prefect to hold my breast milk. Have not used it yet in freezer. Enjoy using glass instead of plastic