Practice aid for backfield timing and line work. Marked positions so backs can hit the holes without linemen. Also great for line drills. The Velcro® attached positions adjusts to your needs for ever changing line spacing or new offensive and defensive formations and changes in your personnel. Weighted at intervals to STAY IN PLACE. Made of tough Nylon Vinyl. Large 9" easy to read letters. 10" wide, 37' long. Includes storage bag. Made in the USA.