A method and system for mail security and traceability is disclosed. The graft includes a base graft and a reinforcing tape applied thereto. The converted portion then serves as an anchor region for a spring structure deposited over the release layer. Each balloon preferably is sized such that, when inflated, each balloon blocks no more than approximately 30% to 75% of the blood vessel in which it is intubated. The bag holder apparatus includes a base; a plurality of wheels attached to base; a platform pivotally attached to the base and moveable relative to the base between an upright position and a laid down position; a lift mechanism capable of supporting the platform in the upright position; and a hoop attachable to the platform for holding a bag. A lens is received in a groove of the stop arm and extends therefrom in position to view a ruler that is mounted on top of the support, facing up.