UST - Ultimate Survival Technologies Para 550 Utility Cord, 100 Foot, 100% Nylon, Includes Carabiner, Black 1146777 Great for a multitude of outdoor uses" UST's Para 550 Utility Cord is made from 100 percent nylon. It is wrapped up for compact travel and storage" and includes a convenient carabiner. Great for camping" backpacking" hunting" and more" you can use it to construct a shelter" lash gear together" and even tease out the core threads to use as fishing line" sewing thread" and more.