Slice-proof adjustable 31" to 56" strap with a pair of steel cables, detachable on one end to secure to chair. Tuck in flap security keeps contents safe. Can easily be concealed Under a coat. A diagonal zipper is concealed Under the flap, and on the back a handy open pocket with a hidden zipper compartment and smart phone velcro pocket inside, and another diagonal zipper. Inside you will find a handy drop in pocket with a double ended leash for keys and optional DayMaker wallet, an oversized pleated zipper pocket with rfid blocking that is as tall and as wide as the bag, a tech pocket with velcro tab for kindle and a security anchor point (anchor leash optional). Being organized is a key to being safe - the less you are searching the more you are aware of your surroundings. Dimensions: 11" x 8.5" x 4", Weight: 21 oz. Material: Nylon twill, polyester lining , Easy wipe clean Nylon Twill, spot clean only (machine washing will disable rfid blocking). OK to use fabric protectant.