Paracord 4 mm thick polyester of incredible strength, with capacity up to 240 kg, its interior is composed of seven twisted cords. Originally used for the production of parachutes, only recently on the American market is rediscovered for the production of accessories "survival" used in the field paramilitary. In addition to creating beautiful bracelets and necklaces it can also be used in the production of belts, straps, leashes and collars for pets. If you are interested to learn more about this new material go on youtube under "paracord" and see a thousand amazing tutorial.