IT is necessary to open the top opening. Then unzip. Pour milk after pulling. Expel the air. Close the zip. Register it takes between zip and opening up. Freeze or chill.
To use. Once back in the liquid state. Remove the label. Unzip. Pour into the bottle. Heat the bottle.
I prefer the option of preserving milk pots of the same brand. Less handling. And what is more reusable.
These bags are disposable. Except for the community (the crib ...) where they will have their great benefit.
But the news on the label are handy.
Nevertheless they are well sealed thereby thaw it under hot water.
