86% of treestand accidents occur while ascending or descending the tree or getting into or out of the stand. Stay attached to the tree from the ground to the stand, during the hunt, and back again with a properly installed Lifeline+ Tandem System from Hunter Safety System. This tandem system allows two hunters to be attached to the same Lifeline. Great when hunting with children, spouses, or cameramen. Features reflective material that "lights up" with the slightest flashlight beam to locate your stand in low-light conditions. The Lifeline+ Tandem System comes with two prussic and two carabiners.