Avery White TrueBlock Technology Permanent ID Label 5" x 8-1/8" Box Of 100, mark property, identify container contents and organize shelf space with Durable ID Labels. With TrueBlock Technology, labels cover up what's underneath so you can easily reuse boxes or relabel surfaces. These sturdy polyester labels stand up to frequent use and resist moisture, scuffing, tearing and smudging. The permanent adhesive sticks to a variety of surfaces, including paper, glass, plastic and metal. Labels are ideal for identifying ownership of property, organizing storage areas and marking large containers at work, home and school. Labels are easy to customize with free online templates and designs and compatible with laser printers.