Yes, it’s a thin sheet of plastic that has certain properties, it appears able to absorb impact from objects without passing the impact on to the glass. Like most people my car insurance does cover my windscreen, but having a windscreen shatter is a pretty traumatic experience, then you have all the bother of getting it replaced while you have to wait around or can’t drive your van. The cost was £300, so each person has to decide if it’s worth it to them, where we’re going (Mongolia) we considered the cost was worth it, and as the screen has already been hit on the way home it’s already earning its keep.