Abstract: The present invention is a shoulder bag having a pouch made of flexible material that, once closed, will remain closed even if substantial weight is carried in the pouch. The construction of the pouch consists of joining together two substantially similar panels of flexible material to form a pouch with closed side and bottom edges and an open top edge. A shoulder strap is attached to the pouch near of the top of each said edge. If the panels of flexible material conform in size and shape to the present disclosure, the opening in the pouch will remain closed while the bag is in use.