A blackjack is a type of weapon designed for close combat. It typically consists of a small, flexible handle with a heavy, weighted end, often made of materials like leather or rubber. The design allows for a quick and discreet way to deliver powerful strikes, making it effective for self-defense or incapacitating an opponent. Blackjacks are often associated with law enforcement and security personnel, but they can also be illegal in some jurisdictions. Their compact size makes them easy to conceal, which contributes to their use in various criminal activities. Proper training is recommended for safe handling and use.