i think thats called the Fall Guy Restraint. I always use my Gorilla harness with the tree climbing aid, tighten it as I go up, that way Im always connected to the tree and can safley climb with a constant 3-4 points of contact at all times.
ORIGINAL: 130woodman
Theres this thing like a seat belt you hook on before you climb and if it trips it catches like a seat belt.