Abstract: A backpack is convertible between a backpack only mode and a backpack and protective outerwear mode. In the former mode, carrying straps and a second compartment are connected to the outside of a first compartment, and protective outerwear is connected to and stored on the inside of the first compartment. In the latter mode, the first compartment is inverted so that the second compartment and carrying straps are stored inside the first compartment, and the protective outerwear is external of the first compartment, so that the first compartment is located on the back of the protective outerwear to form a backpack. A support strap is fastened to the inside of the protective outerwear to provide support for a load carried in the first compartment and to enable the individual to carry heavier loads than possible without the support strap.