Pushing the development of casual yet functional bags to a whole new level is why Master-Piece exists. For taking on the day the Potential backpack is made from a waterproof cordura nylon with leather trims accenting throughout. With an array of functional and secure zip pockets, a carabiner detail on the front adds a utilitarian look.. 100% Nylon, Padded Shoulder Straps, Zip Closure, Main Compartment, Zip Pocket. Master-Piece Men's Potential 2-Way Backpack in Black | END. Clothing