Mail Block is an amazing liquid crystal filter produced by a special method. It protects information on your display from prying eyes. Mail Block features a transparent polycarbonate layer to shield the surface of the liquid crystal display and a silicon stripe layer to prevent peekers. Since silicon is applied to the adhesive face, particles such as dirt, dust, glue, paste, gum, etc. will not adhere to the surface of the liquid crystal display. Soft and flexible polycarbonate is used so that Mail Block is easy to apply--without the hassle of air bubbles collecting under the surface of the display screen. The best part about Mail Block is that you can choose your color rather than being restricted to the ordinarily boring gray of regular privacy screen protectors.