An upper-body garment has an invertable pocket in the garment's back, formed between an exterior layer and an interior lining layer of the back panel. A vertical pocket opening on one side of the back panel permits ready access to the pocket while wearing the garment. Shoulder straps and pockets are formed within the invertable pocket. The pocket linings and straps may be drawn out to invert the pocket into a backpack configuration. The remainder of the garment may be entirely placed in the backpack and carried therein.