A cover for concealing an open pocket, recess or the like in a precast concrete panel following removal of a form used for positioning an anchor in the concrete panel during manufacture thereof is disclosed. The cover includes a planar or flat or substantially planar or flat top sized to cover an open pocket in a precast concrete panel, and at least one projecting member extending outward from an underside of the top of the cover. Each projecting member has two opposed end walls joined by a cross wall having a lesser height than the height of the end walls. The cross wall is positioned operatively substantially perpendicular to the two end walls of the projecting member and is operatively connected to the end walls of the projecting member. The cross wall is under compression in use and supports the end walls which have sufficient flexibility to conform to the side walls of the pocket when positioned in the pocket. In use, the cover is unconnected to any exposed anchor or other structure present in the pocket.