Very actually. Even though they have almost become a fad, hikes, packers, and campers have used them for years they are very useful, as long as you know a few knots, and understand what to make in order to get the job done.They are actually pretty easy to make, or re make. And it contains about eight feet of cord. I use it for camping and hiking. To hang your pack in a tree to prevent bears, to hang my hammock, to make a clothes line, or a makeshift tent. The para-cord it really practical, but it’s so short. And they can hold anywhere from 250 -600 pounds depending on the type, (if it is real para-cord). Great for scaling a mountain, making a harness, or securing yourself in all types of situations. They are great for emergencies; as a splint tie, a sling, a constricting agent in case of infections or poisonings to stop the spreading, etc. I have a thirty plus foot one that is actually a belt to make up for the fact that you are slightly limited by eight feet, but the small ones are great too. The eight foot is more practical to secure an injury, where as 30 plus feet are better for scaling a mountain or securing/fastening a harness. I’m actually going to make another one that is two toned, awesomely designed, and has about sixty feet, with an additional thirty foot thin cord base. This will be great due to the extra length and sizes, plus it has an aesthetic appeal. It’s all about practicality and knowing how to you what you have to get the task done. The more options, the better the rate of success.