Aluminium foil insulation consists of two layers of polyethylene bubbles that are laminated between twolayers of Aluminium foil. This product is a little different from pure aluminum foil, PET aluminum cant be served as a fire retardant, with the remaining functions same as pure aluminum, which is the major source for auto sun shade, seat solar cover. Product characteristic: Type: P202B L×W: 50/40 × 1.2/1.4m (available in custom spec.) Thickness: 5 10mm(double bubble) Bubble diameter: 9mm, 10mm, 20mm Weight: double bubble :230g/,250g/,280g/, 300g/,etc (available in custom specification) Color: silver or other colors Technical parameters: Reflectivity: 95%97% PET aluminum thickness:7micron Recommended use and Benefits: Major materials for auto accessories, such as sun shade, seat cover, bubble envelopes, etc; Widely used in commercial, agricultural and homeowners construction, restrofit: walls, basements, floors, ceilings, roofs, attics; poultry houses, hog and diary barns, etc; Clean, non-toxic, damp and water resistant, radiant heat insulation; Low emissivity, high reflexive up to 97% radiant heat transfer. Thermal, radiant and vapor barrier, non-fire retardant.