Film really without a single bubble mountable, see photos. S - Pen glides very well on this film, u. does not damage them. With backing film, very good guarantees dust free. Assembly Clean, with a microfiber cloth = U dust. Grease-free, on the side touched pull the carrier film, at the cutouts for speakers & Diodes oriented, then put on the surface, pull evenly carrier film, with a microfiber cloth smooth, finished ... I'm thrilled!