Common materials of everyday use make up the shiv knives parts. These materials are secretly readjusted into the killing almost military weapons. The style of the knife is really important. It should be noted that shivs nature doesn’t imply the minimalism ideas; it’s rather the embodiment of survivalism essence. A shiv resembles the concealed weapon of common purpose similar to the bushcraft knife as it is an innocent tool with incredibly menacing aim. It’s used to protect oneself or assault others. There is an interesting background of the shiv haircomb: every working prisoner got a small payment of $1.10 per day. This money was put into their personal accounts. Such goods as combs and shoelaces could be bought at prison commissary store. When prisoners carried through the order form, they could make shivs of their own models and style.