Abstract: A portfolio for use by a participant to a convention, seminar or trade show can be conveniently secured over the back of a seat, provides a surface or transparent pocket for prominently displaying a corporate logo, trademark or association emblem, and has appropriately shaped and dimensioned pockets to hold documents, writing instruments and a cellular phone. The portfolio can be freely provided to such a participant as an advertising medium by installing it prior to the initial meeting over the back of the seat immediately in front of him.