This product is an optically clear, glass shatter resistant and abrasion resistant 4-mil thick window film that, when applied as instructed to the glass surface of interior or exterior windows or doors, helps hold broken glass together and significantly reduces the ultra-violet light that normally would enter through the glass. Helps prevent flying glass shards in the following applications: spontaneous glass breakage, break and entry incidents, seismic events, exterior-facing glass retention (e.g., balcony glass, balustrades, skylights, and outer pane of insulated glass units (IGU), curtain walls).