Imperator Arm BoardImperator Arm Board A tactical wrist coach or quarterback arm play holder widely used in the NFL for referencing plays in games, can also be used to store target information or anything you need to refer to quickly. Antimicrobial spacer mesh close to the skin keeps you comfortable and wicks sweat away. Elastic straps ensure you maintain a full range of motion and dont cut off your circulation. There is an external pen sleeve to hold a map marker and a