The Cyclone Challenger is a fantastic addition to any playground and offers quality at a price that is difficult to match. Children who are between the ages of 5 and 12 years old will love playing on this unit. By climbing on the Cyclone Challenger children will be able to develop strong muscles, and improve their hand-eye coordination, along with their motor skills. The center post is 4.5 inches in diameter. The climbing panels reach 6 feet 5 inches high after installation. Children will love making up games of their own as they climb around this play unit with their friends.