This special micro cord glows in the dark to make it ideal for night use or other low-light conditions, a perfect addition to any emergency or survival kit! Micro cord is a small but versatile cord. With a thickness of only 1.18 mm and 100 lb. break strength, micro cord is perfect for a variety of practical and crafty uses: bracelets, lanyards, key chains, fishing line, handle wraps, and much more. Micro cord is also a valuable addition to any emergency or survival kit.