Bag convertible between folded and unfolded configurations

A bag comprising:

• a front face and an opposed rear face, a top face and an opposed bottom face, and a pair of side faces;
• a flap defined by a front flap and an opposed rear flap with a portion of material positioned therebetween in a flap interior, wherein the front and rear flaps are separable;
• a pair of releasable connectors, a first connector positioned on the front face of the bag and a second connector positioned on the flap, wherein the first and second connectors align;
• wherein the bag transitions between a first orientation and a second orientation, the first orientation defined by the front and rear flaps joined together and holding the portion of material therebetween in the flap interior, and the rear flap is in contact with the front face of the bag and the front flap faces outward;
• wherein the second orientation is defined by separation of the front and rear flaps, such that the portion of material is released from the flap interior, the front flap is positioned adjacent to the rear face of the bag, and the portion of material extends around the front face, rear face, top face, bottom face, and side faces of the bag, and wherein the rear flap is positioned to contact the front flap and faces outward;
• wherein the bag is configured for use as a handheld bag in the first orientation and a comparatively larger bag with an expanded interior in the second orientation.