Ultrahold® permanent adhesive is guaranteed to stick and stay put on cardboard, envelopes, paper, glass or metal.Avery® half sheet address labels won't lift, curl or fall off like other brands. Quickly and easily create your own personalized labels.No more jams or smudges with Avery® shipping labels.Bright white labels are optimized for laser & inkjet printers so you can effortlessly print bold bright colors and clear sharp text. Our TrueBlock® technology lets you fully cover up everything underneath the 5.5 x 8.5 labels, so you can reuse boxes and block out markings and mistakes for a polished, professional appearance on the bright white labels. This pack of 20 shipping labels is perfect for shipping and mailing jobs, as well as for organizing boxes, labeling bins, classroom organization & stickers, and wine bottle labels. These address labels are optimized for laser & inkjet printers so you can effortlessly print vibrant colors and crisp, clear text without worrying about printer jams or ink smudges. You can also easily customize your printable labels with logos, graphics or images using the free shipping labels template and designs at avery.com/templates.