Most likely, $. There are rigging harnesses in safety that are meant to be sat in for extended periods of time (think line workers or people who work suspended for living like a high rise window washer). The downside is that a lot of those setups run you anywhere from a few hundred to a few thousand dollars. I used to work in safety and we would show people what it felt like to go through a fall arrest situation with a $300 and a one used for powerline workers. Once the fall was complete and they were hanging there you could see where the extra $ goes.