This is a roll of aluminium-based insulation foil from the Biard brand. It has a double-foil, single-layer construction, and features an air bubble wrap design, which traps heat and ensures that interior spaces remain warm during cold periods. Each roll comes in the form of a 1.2 x 10 m sheet of insulation material and weighs 5.53lbs in total. Can be used in both homes and offices.