SOLD BY THE METER Almost melt-proof! Donaghys Armor-Prus is world famous in arborist circles for its ability to resist heat generated in speedy descents. The secret formula lies in the unique cover blend of Technora (Aramide) and polyester over a core of lightweight Spectra 900. Donaghys Spectra core incorporates a world-first safety feature made up of twin Kevlar strands which, in the unlikely event of cover failure, prevent the core from being cut or melted completely. Technora is rated 234°C - a higher melt-point than standard polyester. Approved for use in International Tree Climbing Competitions (ITCC).