What are neck knives, hidden neck knives, or the best neck knife? A neck knife as it sounds is a knife worn from a person's neck. It’s usually a small fixed-blade knife which is carried by means of a cord or chain, by which the knife sheath hangs down like a necklace. They can either hang handle up or handle down. The knife may be hung from a loop of natural or synthetic cord, a length of paracord, a leather thong, or even a breakaway beaded or ball chain such as those utilized for military dog tags.
When carried ‘upside down’ the knife stays in place by means of a form-fitting synthetic sheath, which holds it securely in place until yanked on with force. Flip the knife and other material options are possible like leather, but this style of carry can require more effort to deploy the blade. Some manufacturers today are using a looser fitting sheath augmented with magnets.
Neck knives can be single-edged or double edged with blade lengths typically under four inches, and frequently less than three inches. They are primarily intended for utilitarian use, although self defense is becoming more and more popular reason to carry this way. They are sometimes worn under one's shirt for concealment, although this makes a quick draw nearly impossible without practice and even simple retrieval for utility purposes is awkward. They are more frequently worn outside of a shirt. Not only does this make drawing the knife far easier, but it also avoids legal issues in jurisdictions where concealed knives are regulated.
Neck knives, hidden neck knives, or the best neck knife can be of a variety of blade materials from steel and ceramic to plastic and polypropylene. There is just no shortage of styles and functions these handy knives are being made in.