Traditionally tape is used on the floor to indicate where the talent is supposed to stand. This works but does leave tape on the ground and can damage the surface such as trying to remove it from a roll of seamless paper, or leave unwanted glue residue behind. The Camera T marker features 1000 denier nylon construction for strength and durability, Filled with 18 oz of shot so it stays put, multiple colors available, A grommet for easy storage and transportation, 6" X 8".