Avery Pres-a-ply labels are economical, can be used for almost every addressing or identification need and are great for high volume, low-cost printing. Permanent adhesive. Get mass mailings and important promotional materials out the door quickly, easily, and professionally using Avery Laser White labels. These white labels produce clear, easy-to-read text and graphics for custom labeling without the hassle of dealing with a printing service. Simply format the labels you need and print them out on your laser printer.