From mailing and shipping to organization and identification, simplify your tasks with this pack of 2,500 Avery 5963 TrueBlock Printable Shipping Labels. These 2" x 4" bright white labels provide superior adhesion with Ultrahold permanent adhesive guaranteed to stick and stay on most smooth surfaces, like paper, cardboard, glass, and metal. Plus, TrueBlock technology completely blocks out everything underneath the label, so you can cover markings, correct errors, safeguard sensitive information, or give new life to old boxes by concealing old labels. Optimized for laser printers, these label sheets feature Sure Feed technology that ensures a reliable feed through your printer, reducing misalignments and printer jams for crisp, hassle-free printing. You can also personalize your sticker labels by hand or use Avery Design & Print Online and the available label templates and easy-to-use design tools to print customized labels on demand.