A shoulder holster is a type of firearm holster that is worn over the shoulder, allowing the gun to be carried under the arm. This design distributes the weight of the firearm across the shoulders, making it comfortable for extended wear. Shoulder holsters are often used by law enforcement and military personnel, as well as civilians who prefer concealed carry. These holsters typically consist of straps that secure the holster to the body, with the firearm positioned for easy access. They can accommodate various types of firearms, including handguns and revolvers, and are available in different materials such as leather and nylon.