Quality Park Department Brown Envelope 10" X 15" Pack Of 100, holes allow you and your recipient to acknowledge the contents are correct. String and button closure provide a secure seal. 5-columns help ensure a proper delivery. Columns include date, deliver to, department, sent by and department information. For use with documents measuring 10" x 15", so you can easily secure and transport materials. Greener choice contains 20% postconsumer recycled content.