Weâve all seen action movies where someone runs along an uneven surface or across obstacles at a high speed. Let your kids recreate that adrenaline-pumping experience by lining up alternating NinjaTrix Slanted Steps! These steps are each 25â tall, with a 36â long slope and 29.5â X 24â base. It can be attached to the NinjaTrix Carpet Bonded Foam Pad (sold separately) for a secure surface for tricks, parkour, and martial arts moves.