Abstract: A process for the production of a flexible laminate having an outer and visible layer which provides a holographic effect. A metal foil bearing a holographic image and a layer of plastics size is brought together with a flexible substrate having an outer layer of a plastics material which is comparable with said size. The substrate and foil are brought together with their plastics layers adjacent each other, under conditions of heat and pressure at a level and for a time sufficient to adhere the foil to the substrate but insufficient to destroy the holographic effect.