Freezer bags are rated for use in microwaves btw. They are not rated for being put in pots of boiling water - something that Glad is referring to (ie. the "Ziploc Omelet"). That is where a bag is layed in boiling water in a pan for 10-20 minutes. The point of eating out bags is using hot water (below boiling) and using it as a "bowl". You are not "cooking" the food - the food is all precooked and dehydrated.
Btw, the bags they used to use in MH meals? Those are basically oven bags which you can buy in nearly any grocery store. They are usable in ovens to usually 450* or higher. So yes, they could lie in boiling water for LONG periods. So can vac bags.
Sarah, I'm confused <img src="/forums/images/graemlins/confused.gif" alt="" /> one would think that freezer type bags being thicker and heavier duty, it could hold up better than the flimsy sandwich type <img src="/forums/images/graemlins/tongue.gif" alt="" /> Are there brands you prefer? I use /reuse after cleaning, vac seal bags, but they lack the top closure. I find the top closure convient to let the food steep, and if I can't finish it all before I need to attend to other matters in camp, the zip keeps the critters out.