Signature Straps are the material side of the 30 mm Signature Belt System. Handmade in Italy, each strap uses either full-grain calf from a sixth-generation German family tannery or exceptional Italian bovine suede, with a soft Italian nubuck reverse. They pair with Signature Buckles in the same slim 30 mm system, while Perennio uses a wider 35 mm format. Add a second strap to change the character of a full Signature Belt without buying another complete belt: calfskin for sharper structure, suede for a softer, more relaxed finish.