So, I'm looking for an emergency escape hood for smoke/fire, something that I can fit easily into a large cargo pants pocket, backpack, purse (for the girlfriend), etc. Any recommendations on brands or types? Are there any tests that have been performed on some of these? I don't really care much about a warranty on a 1 use item essential for a life-or-death situation; if I need the warranty, I won't be able to file it... So, tested functionality would be nice.