Meet the CIMA M171 Knife: a dog tag knife with a stainless steel body that you can wear around your neck and use anywhere to get out of trouble. The knife has a compact, folding design, measuring 3.3″ in total. The knife is 1.1″ long. The whole dog tag knife weighs 1.5oz.
This knife can be easily worn around your neck. It even works as a money clip. Not too expensive either.