Originally used by the military as a cord for parachutes.
One of the great uses for paracord (parachute cord) is the development of survival bracelets. These are used by hikers and bush-walkers to carry a length of paracord for emergencies as well as a compass and fire-lighting equipment.
Paracord also provides an attractive material for the making of bracelets and other items for the more robust individual.
Paracord will not rot and is very strong with a working load capacity of 249kg (550lb, which is where it gets its type coding).