Improvised Harness: Diaper Sling

The Diaper Sling is an example of an improvised harness.  You can make it out of normal 1" tubular webbing, or out of 2" flat (seat belt) webbing.  The ends are tied together in a water knot that is sized to fit you.  

For other examples, see:

Hasty Harnesses, Diaper Sling @ 6:00