Wearing a Neck Knife around the neck has turned out to be very handy in many situations. These pocket knives are very compact and often come secured in a protective Kydex sheath. Even users lacking pants pockets have the option of having their knife on hand at all times. The knives are often suspended from ball chains, which makes them safer to wear because the chains break under a certain amount of strain. Unlike the also popular cords, the chains prevent accidental strangulation if it gets entangled.