The warped wall is used in various Ninja Warrior franchises.The height of the warped wall varies depending on the competition. American Ninja Warrior used a 14 ft (4.3 m) warped wall for its first seven seasons, before switching to a 14.5 ft (4.4 m) wall in season 8. In American Ninja Warrior Junior, the warped wall measures 13 feet (4.0 m), and will be completed at that height by the 13-14-year-olds. The unique wall is equipped with two pocket levels, which will provide assistance to the other age groups. 9-10-year-olds have a pocket at 10 feet. 11-12-year-olds have a pocket at 11.5 feet.