3-in-1 Design: VEVOR 25 ft x 48 in double 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, maintaining a comfortable indoor temperature year-round. Premium Materials: Crafted from double reflective aluminum foil and high-density EPE foam core, our 15.1 mm thickened heat reflective insulation roll efficiently reflects sunlight and blocks heat transfer in summer, while preventing indoor heating loss in winter. Stay cool in summer, keep warm in winter! Reflects Over 95% of Heat: Featuring high-density aluminum foil coating with outstanding heat reflectivity, this double reflective foam core radiant barrier efficiently reflects more than 95% of solar heat. Experience rapid heat dissipation, keeping your space cool and comfortable during hot days. Easy Installation: This double-sided aluminum foil insulation roll is easy to cut and install. It is convenient to 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, strong and lightweight. It's perfect for windows, garage doors, RVs, houses, roofs, etc, offering effective heat blocking and insulation wherever needed.