Better sight at night. Night Vision window films help block the sun’s damaging UV rays, reduce glare and reject up to 71% of the sun’s heat. These darker shaded films are designed to reject solar heat that is produced from visible light, while providing significant glare relief. Night Vision films allow 15% to 35% of the natural light into your rooms by day, and thanks to a low interior reflectivity, you can still enjoy the view out by night. Plus, higher exterior reflectivity means you can enjoy enhanced privacy with your windows both day and night. Preliminary results indicate that Night Vision window film will save the homeowner 10 to 15 percent in energy costs per year. Even so, the homeowner is more pleased with the film’s other benefits.