I have seen people in a variety of disaster situations (fires, falls down mountains, airplane crashes, etc) and the one place where the clothing seems to remain intact (except in a deadly fire) is the front torso area. Fanny packs, pants, belt pouches and packs all seem to get torn off or lost somehow. Shirt pockets or vests seem to withstand the forces, and if it is in that area, it is more likely to survive for you to use.