A superb specialist fully dry-treated rope that is ideal for winter climbing, alpine style ascents and expedition use. Excellent longevity and handling. 50m. Unicore is a process that bonds the sheath to the core in such away that if the sheath is cut or damaged there'll be no bunching up when abseiling, ascending or belaying. This means that you get zero sheath slippage. NBPrice is per rope, not per pair.