Features: Radiant barrier reflective insulation is strong acid and alkali corrosion resistance, anti radiation 97%, efficient heat preservation, heat insulation, moisture, efficient and energy saving, often applied in pipelines, roofing, steel structure plant, cold storage, workshops and so on. Specifications: Material: reinforced aluminum Color: white Size: about 4 x 250 ft Package includes: 1 x Radiant barrier Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Winding risk may exist, please keep our product away from children.