They should last you a long time, too. The best rope halters are make of a high-quality polyester a this lasts longer than nylon or polypropylene rope, which is often used in cheaper products.

Polyester Sheath / Nylon Core Static Kernmantle construction UL Certified to NFPA 1983-2006 Standards. 10.5mm diameter / 6,500 lbs. MBS 7/16th inch diameter / 8,000 lbs. MBS ...

Is rope recycling worth the effort though? I've been wearing the Mammut Crag IN Jacket ($179/£160) for the past few months and have been impressed by the windproof warmth of the thick polyester ...