Keep You Cool in Summer, Warm in Winter VEVOR double reflective insulation roll features ≥95% high reflectivity, utilizing double reflective aluminum foil and high-density EPE foam core. It effectively blocks sunlight in summer while preventing indoor heating loss in winter, maintaining a comfortable indoor temperature. Crafted with double-sided aluminum foil to reflect most solar energy and EPE foam core to block heat transfer, our heat thermal insulation roll offers exceptional thermal insulation, delivering coolness during hot summers and warmth throughout cold winters. Made from high-quality double reflective aluminum foil, our thermal insulation heat shield is designed to be tear and puncture-resistant, scratch and wear-resistant, ensuring exceptional durability and stability for long-term use. To maximize thermal insulation effectiveness, consider these 3 installation tips: maintain a clean and dry base surface, allow at least a day without exposure to water after installation, and press firmly for a tight seal and optimal insulation performance. We offer various thickness and size options to accommodate different needs. Whether for windows, garages, RVs, houses, or roofs, our EPE foam core radiant barrier provide effective heat blocking and insulation, ensuring your living environment remains comfortably warm and insulated.