Long Lines are packaged in sets of 12. They are each 24" long and 3" wide. New colors match the red-level and orange-level courts for 10 and Under Tennis. An absolutely great way to quickly set up tennis court boundaries, define target zones or to clearly guide players to correct court position. Designed to fit into any racquet bag, Long Lines are an ideal length for team coaches, traveling coaches and players. One side has a slip-resistance grip pattern molded into the surface.