Kernmantle is a type of
rope, characterized by a
braided
core (
kern, from the
German) and a woven outer
sheath (the mantle). The core provides
strength while the sheath maintains
flexibility and gives the rope a smooth
aspect, reducing snags and kinks.
Most rock climbing ropes are kernmantle ropes, and come in 10mm or 11mm widths, or as narrow as 8mm for use in double rope techniques.