Porter Yoshida & Co Tanker 2-Way Briefcase in Khaki. Porter Yoshida & Co present this versatile and high-quality briefcase in a contemporary Khaki colourway. Included in the bag is a long shoulder strap, which transforms the briefcase into a messenger bag. The inclusion of concealed shoulder straps also mean the briefcase can be used as a backpack, making travelling with a lot of bags easier. The briefcase features two main zip-closure compartments, lined with the signature 'Rescue Orange' lining. The zips have been specially coated to allow them to age effectively, making the Tanker 2-Way Briefcase a staple piece that will last a lifetime.