The Apex line is the manifestation of the Fire-head, the iconic guilloché of S.T. Dupont. For the first time, this guilloché has been crafted in leather in three dimensions. This product is made in Italy with a smooth full-grain calfskin leather exterior, a light grey cotton lining, and ruthenium finishes. It features a zipped exterior pocket, a removable wrist strap, and an interior pocket under the flap. The leather used is LWG certified.