This is a GRG chest pouch from Eagle Industries. The GRG (Gridded Reference Guide) pouch can hold quick reference material or maps that you need to access quickly. You can easily wear the pouch around your wrist, or mount it to any MOLLE webbing. You can easily lift up the pouch for quick viewing of your reference material. The user folds the pouch in two. Hook and loop holds the pouch securely shut. Also, the inside of the pouch is clear plastic for protecting documents. There is a flap on the side for holding pens or other small items.