Shipping labels with TrueBlock Technology make deliveries easy. These bright white labels completely block out any writing underneath so your boxes and envelopes have a neat, professional appearance every time. They work with most popular shipping software. They're also great for personalizing gifts, homemade goodies, party favors and more. Easily customize the labels using free online designs and templates and your laser printer. Add your logo, graphics or other images to create a one-of-a-kind package. Then print and ship. These versatile labels can help make all your shipping and mailing simple.