The 'floating' backpack that could ease the burden of travel

[Filliam H. Muffman]

I too would be interested in a long term test to see if it reduces wear and tear on knees/feet/etc., and if it's worth the extra weight.

I am very fast moving over large riprap, but it could throw your balance off if you aren't expecting the slide to hit the end of travel. I can see people eventually getting used to it and learning to adjust so that you step up earlier so the force on the straps gets lighter when you are going up or down stairs/rocks.