Attaches to the crossbar on dual sport bikes with side release buckles. Makes exploring and wandering easier and more fun. In addition to the map display window there are a bunch of other pockets and zippered compartments to hold your note pad, writing tools, compass, etc. Unique design detaches with gloves on, and does not flap in the wind. The world’s best way to carry several maps and other stuff. Black. 9"×5" outside window size. 13"×20" inside window size.