The bracelet could be disassembled as rope for making traps, building tents, shoelace, packing rope, clothesline, flashlight rope, emergency escape, fire, etc. in a lot other emergent situations. The built-in whistle is clear and loud to be heard from miles away to alert others you need help. High-strength nylon buckle paracord, good abrasion resistance, not easy to fluff. Flint on one side with removable striker/ scraper on the side. The scraper works as a fire starter, used as a knife as well.