The Stopper™ is a foot and corner shield for surgical trays that is specially designed to prevent holes, rips and tears in sterilization wrap from heavy and sharp-corner trays. The unique design allows the sterilizing agent to flow into corners of tray. The guards do not retain moisture and will not flatten under the weight of heavy trays. The patent-pending Stopper is are easy to use, economical and come packaged non-sterile with 1000 guards per case.