A collapsible collar to prop open a bag includes a foldable body having a folded position and an open position, the foldable body in the open position having an open top and an open bottom, and defining an open passageway between said open top and said open bottom. The opened foldable body is sized and shaped to fit within an open bag. A supporting ear is provided on the foldable body to hold the body in position in said bag when said collar is being used, the ear being moveable between a retracted and an extended position. When extended the ear prevents the collar from being over inserted into the bag. A folded over handle props open the foldable body to keep said foldable body in said open position in said bag and helps to move said bag without tearing.