Up-n-down Summer Edition, Patent pending
The Up-n-down summer edition is available in a Butterfly and an Eagle version.
The Butterfly version enables you just to roll down the mountains especially on meadows or crushed rocks. An extremely light version which you can easily carry in your backpack and build it together in just 2 minutes.
The Eagle version is for driving up and flowing down. The reconstruction also takes you just 2 minutes. That version is especially suitable for either crazy people who become boring when they simply go up and down or for those having knee problems - that's more gentle.
Your Up-n-down is back pack compatible,
Patent pending