āPer has two standard colors of metal foil: gold and silver. These two metal foils contain real gold and real silver ingredients respectively. With proper care and use, premium metal foil ensures the stamped letters will not peel or flake over time.

For specific types of leather, āPer adopts blind-embossed(colorless) for letter stamping. Meanwhile, a protective film is applied over the embossed impressions to prevent the imprint from springing back.