Custom-made pieces, known as HSS bags, feature a special horseshoe stamp to the left of the Hermès stamp inside the bag. The special custom-made service is offered to only a select number of top collectors. For each leather and each season Hermes designates which colors will be offered in which leathers. Hermès lists which specific leathers will be used for each design feature such as linings and handles. This bespoke creations typically take six months or more to arrive.