Easily color-code books for quick identification. 3.9-mil polyester protection. Color is "locked-in" between 2 plies of archival rated polyester films, offering ultimate scuff/scratch and fade resistance. Bright bold translucent colors offer color-coding identification while allowing information to be read through the protector. Non-yellowing and crack resistant protection for extended application life. Rounded corner design reduces lifting and prevent corner lift-up. Natural UV blocking properties built into Col-R-Tone ink systems for added fade resistance. Label dimensions: 7/8 inch x 1 1/4 inches. 250 labels per roll.