The Edelrid Tommy Caldwell Eco Dry DuoTec is built for the long-haul sessions: the days spent working a crux move through a dozen falls, lowering off the same anchor repeatedly, and coming back the next weekend to do it again. The Thermo Shield treatment and high sheath proportion work together to keep the rope handling consistently smooth even as the fall count climbs, so the rope that shows up on day one of a project still feels like itself on the last send attempt. The Duo Tec bi-pattern middle mark is woven into the construction rather than dyed on, so it stays readable through heavy use and simplifies rope management on long rappels. What Our Gearhead(R) Experts Are Saying:"The high sheath proportion is what keeps this rope in rotation after a full season of projecting. It holds up to repeated lowering and high-fall-count days without going stiff or fuzzy the way thinner-sheathed ropes do."