The Vevor reflective insulation roll is a 6 mm thick radiant barrier designed to help keep spaces cooler in summer and warmer in winter. Its four-layer construction combines aluminum foil, double-layer air bubbles, and white PE film for heat reflection, insulation, and vapor control in one roll. With over 95% thermal reflectivity, it is suitable for windows, garage doors, RVs, houses, and roofs. The material is lightweight, durable, and easy to cut and install for a range of DIY and professional applications.