A holster is a type of carrying case designed to hold a firearm, such as a pistol or revolver. It is typically made from materials like leather, nylon, or plastic and is worn on the body, often attached to a belt or waistband. Holsters come in various styles, including inside-the-waistband (IWB) and outside-the-waistband (OWB), allowing for different levels of concealment and accessibility. Holsters serve to secure the firearm, making it easily accessible while also ensuring safety by preventing accidental discharges. Many holsters are designed with specific features, such as retention systems, to keep the firearm in place during movement. They are essential for law enforcement, military personnel, and civilian gun owners who carry firearms for personal protection.