The spragwerks locking valuables bags are durable and versatile. The outer is made from a heavy weight beige waxed canvas, and brown oiled leather, the inside is made from ripstop saftey orange nylon. Has a inside pocket. The bag zip closed and locks with the repurposing of a zipper and lock from a vintage bank bag- also has a flat bottom so it stands upright on own... this is built to last, and can be used for a myriad of items!