3-in-1 Design: VEVOR 250 ft x 48 in reflective insulation roll features a versatile 3-in-1 design: radiant barrier + insulation + vapour control, ensuring exceptional thermal performance. Excellent radiant barrier keeps you cool in summer and warm in winter Triple-Layer Protection: Aluminum foil reflects heat, EPE foam locks in temperature, and the milky white PE film blocks moisture. 3 mm thick thermal insulation roll efficiently reflects sunlight and blocks heat transfer in summer, while preventing heat loss during winter Reflects Over 95% of Heat: Featuring high-density aluminum foil coating with outstanding heat reflectivity, this aluminum foil EPE foam core radiant barrier reflects more than 95% of solar heat, delivering superior heat blocking and thermal insulation Easy Installation: This aluminum foil insulation roll is easy to cut and install, just DIY the roll size and shape to meet your different needs. When not in use, it can be easily folded up for space-saving and convenient carrying Versatile Applications: Our thermal insulation heat shield is tear and puncture-resistant, scratch and wear-resistant, durable and lightweight. It's perfect for windows, garage doors, RVs, houses, bungalow roofs, etc, offering effective heat blocking and insulation