Slice-proof adjustable 26?-51? waist strap with a pair of steel cables extends through a sleeve on the back. Slide the bag over the buckle to conceal it. A zipper security leash in the back seam secures the outside zippers. Identity protecting rfid blocking pocket inside. Dimensions: 5" x 7.25" x 3.5". Weight 10 oz. Material: Nylon twill, polyester lining , Easy care wipe clean textile. (Washing will disable rfid protection.) OK to use fabric protectant.