Avery mailing Labels are perfect for shipping, bar-coding, organizing, and business and home mailings. To cover up unwanted labels already on packages, try Avery shipping labels with trueblock technology, or you can browse all address mailing labels. Avery mailing labels are made of sturdy polyester that resists moisture, tearing, and smudging, making them ideal for use in extreme temperatures and high traffic areas. In addition, the smooth feed sheet edges prevent adhesive build-up and jams, while the quick-drying sheets prevent smudging. Save on Avery mailing labels at Shoplet!