Nylon Made in the USA or Imported Arborist Climbing Strap: For effortless climbing, this short foot loop strap features up to 30" of in-line bungee elongation that absorbs shock and ensures smooth ascents; reduce fatigue with a tree climbing ascender suitable for various tree work Durable Nylon Material: Features built-in friction saver arborist mechanism to reduce wear and tear and integrated nylon straps with loops for easy adjustments on long climbs; the snap tied above the ascender extends up to 30" to eliminate dead spots Multi-User Ready: The zero-setup design lets multiple climbers use the climbing ascender and descender strap without prior adjustments; suitable short style tree climbing equipment for climbers 5' tall and under and team operations Tool-Free Replacement: Replace the arborist sling bungee in under five minutes with no tools required; a knee ascender minimizes downtime, keeping operations seamless and setup easy to help you focus on your climb Precision Engineering: The climbing aider bungee travels down the channel to wrap around a shiv with stainless steel sealed bearings inside a machined aluminum block; using advanced climbing technology provides smooth rope movement Tool-Free Replacement: Replace the arborist sling bungee in under five minutes with no tools required; a knee ascender minimizes downtime, keeping operations seamless and setup easy to help you focus on your climb Precision Engineering: The climbing aider bungee travels down the channel to wrap around a shiv with stainless steel sealed bearings inside a machined aluminum block; using advanced climbing technology provides smooth rope movement