Designed by Rich Carlson and manufactured by BlueWater Ropes, the VT Prusik features a super tough, heat resistant Technora aramid sheath over durable nylon core strands. The core in this kernmantle design keeps the VT from flattening and binding up. The VT performs well when used for ascending, self-belay while rappelling, as a traveling rope grab or in conjunction with a Prusik minding pulley in haul systems.