A smaller climbing bridge attachment for use with the Challenger, Explorer and Navigator Steel Climbing Frames and the Forest Climber. ‘Growable’ at no extra cost. If your Explorer, Challenger or Navigator Climbing Frame is built at low height, the Jungle Run can be built as a ramp at low height too. A Jungle Run Toddler kit is suitable for use in this format only The Jungle Run then grows into its bridge format when the climbing frame is built at full height.