Redesigned for 2015, the HSS Lifeline features reflective material that â??lights upâ?쳌 with the slightest flashlight beam helping you find your stand in low-light conditions. Life Line uses a positive-stop knot to slide up the standing 'life line' you install the first time you climb to your stand. After installed every climb is safe with no need for a tree strap. Allows two hunters to be attached to the same Lifeline. Great for children, spouses or cameramen.