TOP QUALITY MATERIALS: Our clear label protectors are made of high-quality PVC material, which is transparent and clear, can be stain-resistant, waterproof, scratch-resistant, and has strong durability. EASY TO USE: The waterproof clear labels have been cut, no tools are required, rectangular design, rounded corner design, the edges will not curl, can cover the books barcodes well, and facilitate scanning. PERFECT DIMENSIONS: The size of the clear labels are approx. 3.15 x 1.18 inches, which can fit most sizes of codes. The sticker is transparent and can maintain the clarity for a long time, so as to ensure that you can accurately scan the internal bar code WIDE APPLICATIONS: Perfect for use in classrooms, schools, hospitals, home and office libraries, factories, etc. Can be applied to food jar labels, envelopes and packaging seals, specimen making and more. PACKAGE CONTENTS: You will get 1 roll of 500 pieces clear label protector, enough quantity to meet your needs.