Abstract: Apparatus for holding a bag open to assist in the filling thereof. The appartus may include a relatively rigid middle panel at the opposite edges of which are attached relatively rigid side panels. The side panels are attached by hinges which allow them to move, relative to the middle panel, from coplanar flat positions to positions substantially perpendicular thereto, allowing insertion of the apparatus into a bag. The side panels are preferably biased away from the perpendicular positions toward the coplanar flat position so that when inserted into the bag, the bag is automatically held open by the apparatus.