Keep You Cool in Summer, Warm in Winter VEVOR double reflective insulation roll features ≥95% high reflectivity, utilizing double reflective aluminum foil and PE air bubble film. 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 PE air bubble film to block heat transfer, our thermal insulation roll offers exceptional thermal insulation, delivering coolness during summer hots and warmth throughout cold winters. Made from high-quality double reflective aluminum foil, ou 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 PE air bubble film radiant barrier provides effective heat blocking and insulation, ensuring your living environment remains comfortably warm and insulated.