Why does Pelle Frau® Century have a washed / stone-washed effect?

On the occasion of the Centennial of the Poltrona Frau brand, the company has developed a unique collection with strong references to its historical heritage. It is Pelle Frau ® Century, which combines non - passing dyeing, with a drumming with tiny stones which, when in contact with the surface of the leather, makes it cloudy, with a stone - washed effect.