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. This model includes identity protecting rfid blocking pockets, an rfid organizer on the front (4 card slots, 1 drop in pocket, and a zipper pocket), and a super-sized, pleated rfid blocking zipper pocket that is as tall and wide as the bag inside. The front zipper pocket has an oversized lining for bulky objects and includes a double ended leash for keys and optional DayMaker wallet. Being organized is a key to being safe - the less you are searching the more you are aware of your surroundings. Dimensions: 5" x 9" x 3.5" , Weight: 13 oz. Material: Ballistic polyester , Easy care wipe clean textile. (Machine washing will disable rfid protection.) OK to use fabric protectant. Material: Nylon twill, polyester lining , Easy care wipe clean textile. (Machine washing will disable rfid protection.) OK to use fabric protectant.