This is a leather item called a "police keychain" (or key flap) that is also used by public institutions in the United States. It features a traditional embossed pattern called "basketweave," and is used by passing it through a belt. This keychain has a "flap" that prevents keys from directly hitting and scratching your pants or body, combining functionality with a rugged design. BIANCHI A leather manufacturer in the United States, known for supplying products to public institutions such as the FBI and the Los Angeles Police Department. This keychain is an official piece of equipment for the LAPD. It is no longer in production and only vintage items from before 20 years ago are available, with many counterfeit products being made. It is a brand famous for gun holsters such as Smith & Wesson, and this type of keychain is distributed as a vintage item.