Just peel-and-stick to protect invoices and shipping documents from dirt and moisture. Pressure-sensitive adhesive sticks aggressively to paper, metal, wood, corrugated, or plastic. Back-loading style forms tamper-evident pocket for papers. Pocket must be torn or cut open to retrieve papers. Open end is first dimension listed. Call for details about removable adhesive, high tack adhesive, and custom imprinting. Usable dimensions are slightly smaller.