Vintage M-51 Engineers Bag measures 12" X 14" X 5 ¾” and is made of durable heavyweight washed cotton canvas for an authentic vintage look. This engineer bag features a large main compartment, a small hook and loop pocket, a small open top pocket, a large hook and loop pocket, and two side pockets for maximum storage. The main compartment measures 10 ½” X 10 ½” and features a large main flap with metal turning lock closure and a zipper closure pocket. For carrying purposes, this canvas bag has a top carry handle and a detachable and adjustable shoulder strap measuring 59” when fully extended. Within the field-bag are five pen holder loops and a plastic document pocket with a hook and loop closure.