A pre-fabricated pneumatic tourniquet apparatus and related methods are provided. The tourniquet is easy to apply, ensures consistent and even circumferential pressure, is light weight, provides standard life saving operation, and can be utilized in any setting or situation. The pneumatic tourniquet apparatus is comprised of a bladder, a reservoir chassis, a retaining cover, a receiver and a slider. The bladder is elongated in shaped—long enough to wrap around most human limbs.