thanks for your input @babycromer

We actually stopped using them. I loved the idea of them but the bags are bulky, if you are looking to start a freezer stock they take up A LOT of room. My son is breast fed but we give him a bottle every now. He I have over 300 ounces frozen in the bags and it takes up half a deep freezer. I switched to the nuk bags bc they are cheaper and freeze flat. Plus my son likes the Nuk bottles.

That's a lot of help thanks @lalamichelle0707

They are easy to use, but hard to find the bags to replace and expensive to use when replacing the single use bags