The game bags I use are well constructed and designed to breathe (and cool better) than any pillow case that I own. And, I know that they are just as strong or stronger. TAG bags are a bit expensive but, they are designed for the specific purpose of packing out and taking care of game meat. Game bags are like bullets,and are such a small part of the cost of my hunt and I don't care to scrimp on costs to be possibly disappointed.