I know, this info is from parasailing. My point bringing this here is that they used this deteriorated harness to fly a passenger 450 feet off the water, at which time the harness let go and she fell to her death.
The webbing that broke looks to be 2 inches wide, and both sides gave out. Lots of sun and salt over the years weakened it.
We all hang by 2 inch webbing, sometimes even the 1 inch stuff. Not 450 feet above the water, but a fall from 20 would hurt like hell. Lesson for us: be wary of old gear, pitch it if it looks weak, especially if your life depends on it.
the full NTSB report is here: http://media.trb.com/media/acrobat/2014-07/80851982-19210550.pdf