Difference between freezer bag and storage bag We accidentally used Ziploc "storage bags" instead of "freezer bags" to package some meat for the freezer. We noticed this after the fact and it got me thinking: what is the difference? Marketing aside, they both appear to be resealable zipper-like air-tight and water-tight plastic bags.
Freezer bags are slightly thicker plastic, and more forgiving of sharp or pointy foods (like meat with protruding bones).

I know some freezer bags include a white place to write a label on, I don't remember if storage bags do as well.

The press-to-seal bags do a better job of not spilling if accidentally dropped compared to the zipper versions.

http://web.archive.org/web/20130105063349/http://www.consumerreports.org/cro/magazine-archive/2010/march/home-garden/storage-bags/overview/index.htm