Get large shipping and mailing projects out the door quickly and easily with these white shipping labels featuring trueblock technology. These bright white labels with permanent adhesive completely block out any writing underneath so your boxes and envelopes have a neat, professional appearance every time. The number of jam-free, smudge-free labels is perfect for all your high-volume projects. Easily customize with your logo or graphics using free online designs and templates. Then just print using your laser printer and ship.