Abstract: A reusable shopping bag assembly is provided. The assembly has collapsible expandable soft sided bags which can be rolled up from an upper open end in a spiral shape, the bags having a bottom end having a plurality of holes to permit air flow there through for allowing the bags to be rolled up into a compact shape. A pair of hanger bars are attached to opposite bag sides adjacent the upper open end of the bags. Opposite ends of each hanger bar extending beyond opposite bags sides for engagement with spaced apart upper edges of a shopping cart to suspend the bags in a shopping cart when the bags are unrolled. A carrying case is provided having a side opening. The side opening being adapted for insertion of the bags when the bags are in a rolled state so that the carrying case will encapsulate the bags.