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 security personnel, as well as by 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 like the Glock or Smith & Wesson. Shoulder holsters are popular for their discreet nature and ability to be worn under jackets or coats.