Abstract: A metallized film has a substrate layer of a synthetic polymeric material, having on at least one surface thereof, an adherent layer comprising a copolymer containing styrene and/or a styrene derivative, and at least one ethylenically unsaturated comonomer copolymerizable therewith, the copolymer comprising at least one free functional acid group. A metallic layer is on the surface of the at least one adherent layer, remote from the substrate.