A Texture Fades Embossing Folder is a tool used in papercraft and mixed media for adding dimension to card, papers, metallic foils, vellum and some textiles. It is made of durable plastic, hinged at the short end (generally referred to as "top").
To use, simply place your paper or card inbetween the plastic and run through your favourite machine. The paper or card will be pressed into shape, giving a raised dimensional effect.