Tanker Vertical BagPORTER 's signature series, Tanker, has been reborn using 100% plant based nylon, the world's first material to be successfully mass produced. With the concept of "ALL NEW TANKER Nothing changes, everything changes," we have undergone revolutionary changes. The Vertical Bag is a distinctive item that combines a vertical design with a thick front pocket. The main compartment is large enough to hold a long wallet, and has more storage capacity than it