Some kind of string, cord, or rope is often useful in an emergency situation. This 100% nylon paracord, also known as 550 Cord, is a commercial Type III cord with a minimum break strength of 550 lbs. Its kernmantle construction with an outer sheath and 7 inner strands is elastic and durable, made in the USA. 100 feet long. However, think about where you will be using your emergency bag. If you expect to be in a residential area, string and rope may be readily available, and your money may be better spent elsewhere. If you are likely to be on your own, this may be a more important item in your kit.