Constructed of durable, lightweight nylon and designed for versatile carrying applications, this portfolio is roomy enough for carrying extra project supplies and pads. Fits ALVIN® PXB Drawing Boards. Extendable length handles become shoulder straps. Third handle provides extra control when using shoulder straps. Feature side zippers and Velcro® fasteners at top for easy access. 7½" X 9" outside pocket and 1½" reinforced gusset.