Features: ⭐【HEAT INSULATION,ENERGY SAVING and BASIC PARAMETERS】 One way window film blocks out 85% of infrared rays and 97% of UV rays reducing fading and aging of interior furnishings. The heat control window film can retain heat in winter and keep it out in summer, reducing expensive heating and cooling costs. ⭐【THICKNESS AND HIGH QUALITY】 The window film has excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting, won’t fade nor blister, easy to remove, economical and practical. .