The Purcell Prusik: a prusik-basedlanyard that offers excellent adjustabilityand energy-absorption potential, with justa bit more weight and bulk than daisies.The Purcell can be purchased (from SterlingRope) or easily tied from 6mm nylon cord. The prusik knot will slip under highload, avoiding the extreme impact forces offalls on more static tethers. Read more about using the prusik in your personal climbing anchor in the August issue of Climbing.