The average driver does not associate window film with increased safety. But, today's vehicles use tempered glass in the side and rear windows. An accident or a blow from a heavy object can cause these window to shatter into hundreds of tiny sharp pieces of glass. Automotive glass treatments hold the tiny pieces together and are available in clear and privacy shades for increased safety. The opening of a shattered window increases the likelihood of passengers being thrown from the vehicle- the leading cause of death in traffic accidents.  Show less