We applied the Sheath-Heavy design that worked so well for the Canyon Fire to our 9mm rope, to get a somewhat bigger, somewhat stouter and better-handling new rope, Canyonero! The sheath is 52% of the rope, so there is 8% more sheath than core. It is firmly woven for longest life, and uses 100% polyester to minimize water absorption. A nice handling, long-lasting static rope that works great, especially for heavier canyoneers and for Class C canyons with harsh rock, as in Ouray, Colorado.
The Canyonero is longer lasting (than the 8mm and 8.3mm) and easier for everyone to use, for just a little more weight. We also gave it a few more core strands, so it has a rated strength of 5000 lbs as required by some youth programs.