 Most styles integrate "other design features" such as adjustable shoulder straps, organizer pouches, laptop and multimedia sleeves, expansion zips and straps, “add-a-bag” loops and security lock rings.Eastpak engaged in its "first designer collaboration" in 2003 with the Dutch tattoo artist Hendrikus (“Hanky Panky”) Johannes Everhardus Schiffmacher.The "first fashion collaboration" followed a year later in 2004 with the Belgian fashion designer Walter Van Beirendonck.