Helps keep track of downs. Elastic band w/ velcro fastener to secure to wrist. Black, white or *new* pink.
IDEA - Umpires - use a 2nd band (opposite hand) to help keep track of ball position if you are coming back to the previous spot. Ex: 1-10 at the 50 and the ball is on the left hash. As you look at the ball from your position and the indicator is on your left hand, put the indicator around your left pinkie. This indicates that the ball will come back to the left hash if you must re-play the down, have penalty enforcement from the previous spot or have an incomplete pass.