Abstract: A disposable hyperbaric oxygen chamber includes a polyethylene bag which is substantially the length of a patient's leg and which is placed around the entire leg and thigh with the excess bag at the top thereof being folded over the thigh in order to fit snugly thereon without compression. A length of nonstretchable tape seals the top of the bag around the upper thigh just below the inguinal ligament. Another circumferential layer of tape is applied to the top of the bag to attach the same to the patient's pants to prevent displacement of the bag as the patient moves around. In an alternative embodiment, the bag may be preformed into the leg of a pair of disposable shorts to be worn by the patient. Oxygen is fed to the bag through the use of a hose connector secured to the bag. After the bag has been inflated with oxygen, the tubing may be clamped off and removed so that the patient can move about freely.