I'm establishing an outdoor storage building as my gear locker. It's not heated or cooled and will experience swings in temperature on a daily basis. It's pretty secure in most respects, but not absolutely bug-proof. I'm thinking of a bug-proof, dust-proof sack that I can suspend from the rafters, and in which I can hang my down quilts and sleeping bags. Does anyone know of anything that is available commercially (I don't sew), or, does anyone have a better idea????