Bluewater Ropes Icon 9.1mm X 80M Bi-pattern Dry Climbing Rope
Bluewater's Icon single rope is designed to be a great wearing skinny rope. The problem with most skinny ropes is that overall performance can be diluted when chasing a minimum diameter and weight.
The Icon has a 35% sheath mass with a tight braid, so the rope does not become floppy and has less drag, which means less abrasion from running across rock.
* Main photo is Blue.