Constructed of heavy weight 22 ounce cotton canvas. Large laptop size main compartment. Large back document compartment with 3/4" (inch) zipper opening. Dozens of pouches, compartments and pen holders. Large size plastic covered document sleeve. Storm flap. Cell phone pouch. Adjustable shoulder strap. Top carry handle. Nickle plated hardware. Sometimes referred to as the ultimate carry-all for business or travel. Earth Brown M51 engineers field bag. M 51. Dimensions 12" x 14" x 5.5" (inches).