Our unique horizontal/ fanny pack bag can be utilized as either a horizontal shoulder bag or can convert to a fanny pack which rests comfortably on the patient's hips. The horizontal version of the bag is designed to be worn over the shoulder with the bag resting horizontally under the arm. The adjustable shoulder strap uses thick padding to ensure that little stress is placed on the shoulder. The entire oxygen system is concealed within the confines of the bag except for the cannula which exists the bag through a grommet in the top of the bag, travels up the chest of the patient, and then rests comfortably over the patient’s ears. The fanny pack version of the bag converts by removing two concealed waist straps from compartments from the side of the bag. This stress reducing belt system uses wide webbing, a large easy-to-use buckle, and a lumbar pad to reduce stress from the cylinder on the lower back. The bag is constructed of washable, heavy-duty denier, has large easy-grab zipper pulls, an embroidered carrying handle for easy pick up, and large internal and external zippered pockets. This bag can accommodate both M6 and M9 medical cylinders.