... space free. 3.energy-efficient( resist 58%-69% solar-thermal ), heat preservationwinter thermal efficiency it can save air ... obvious after one year. 4.The bubble: when the car ripped the plastic lining membrane, and then reunited, ... is more than 70% light transmission. 5.Insulation: solar film is good or bad depends on the insulation, ... the film, it’s a poor film. Excellent Solar Control Car Film