Slice-proof adjustable 40?-55? strap with a pair of steel cables. A pair of concealed zipper security leashes extend from Under the strap and Under the velcro flap to secure the outside zippers. Supersize front zipper pocket with oversized lining for bulky objects, with a double ended leash for keys and optional DayMaker wallet. This model includes an rfid blocking organizer on front (6 card slots, 3 drop in pockets, a Large zipper pocket and a pen slot). The Large outer open pocket has a hidden zipper compartment and a concealed smart phone pocket with velcro flap. There is an open pocket on each end (one with velcro flap) for umbrella, sunglasses or .5L water bottle (water bottle will fit if the side of the bag has room to expand inward). Inside is a super-sized, pleated rfid blocking zipper pocket that is as tall and wide as the bag, three handy pleated drop in pockets, 2 Medium and 1 Small, and a tech pocket that is Large enough to hold a Kindle or iPad mini. Being organized is a key to being safe - the less you are searching the more you can be aware of your surroundings. Dimensions: 9.75" x 8" x 4.5" , Weight: 20 oz. Material: Nylon twill, polyester lining , Easy care wipe clean textile. (Washing will disable rfid protection.) OK to use fabric protectant.