The Eagle Light 9.5mm by Edelrid is great example of how to reduce diameter without compromising on the technical standards.
This lightweight rope has been treated with Edelrid's standard Thermo Shield which is a process which ensures that the core and sheath yarns are perfectly balanced. A special heat treatment cure first relaxes then shrinks the ropes fibres, this harmonizes the yarns inside the rope and ensures that it remains compact and supple throughout its life.
It has also been treated with Pro Shield which involves a Teflon coating over every single core and sheath yarn to provide a protective layer which substantially improves its loading properties and ability to withstand external forces. It also provides a degree of water and dirt resistance.
The Dry Shield finish on this rope significantly increases the water and dirt resistance making it ideal for alpine use. It does not wash out and so provides a long lasting coating to protect the fibres and extend the life span of the rope.