Decided to do some real world user testing on my Port-Air Pad (http://www.portairpad.com) at the Grampians on the weekend. I took a deliberate 2.5metre fall off Sydney Highrise and stupidly decided to land on my butt. Re-igniting a previous bulged disc injury in my lower back and putting me out of action for a few days. The thickness of the pad and its unique performance characteristics definitely saved me from a much worse injury!