Aerolam SUPER METPET contains single layer of fire retardant air bubble film laminated with both side metalized film. Aerolam Super Met Pet is Specially Designed for Protective and Attractive Packaging like container insulation, insulated bags manufacturing etc. Roll Size (W X L) 1.2m X 40m Bubble Size 4MM X 10 MM Nominal Thickness (MM) 3.5 To 4 MM Reflection Ratio 97% Thermal Resistance Emissivity 0.04-0.05 Temperature Range -122 ? to 230 ?(-50°C ? 110 °C) AEROLAM-SUPER-METPET is Specially Designed for Protective and Attractive Packaging.