Martin Universal-Just Stow It Sketch Mate Portfolio: Black. Perfect for transporting drawing pads and tools to and from school, workshops and the field! The efficiently designed interior features elastic straps on one side to secure drawing pads up to 9x12 inches, while the opposite side stores brushes, markers and pens in ten easy-access pouches. This package contains one 13-1/2x10-1/2x1- 1/2 inch zippered portfolio. Imported.