Synonyms for «safe bag»

Synonyms for individual words can be found below.

Place in a single layer in freezer safe bag. (branappetit.com)
I haven't tried freezing these myself, but I think that they should freeze quite well in a freezer - safe bag for a few weeks. (brighteyedbaker.com)
Unlike regular food safe bags these are specially designed sterile bags to store breast milk. (expressing-mama.com)
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