Climbing spikes (climbers or spurs) strap to your lower legs and boots so a steel gaff bites into the trunk with each step. Arborists and utility climbers use them for removals and spar work, always together with a harness, lanyard and overhead life support line. All three Notch climbers here are rated to 350 lb including gear and meet ASTM F887.
The Notch Gecko Carbon Fiber 2.0 (52142T) is the lightest at about 4.7 lb per pair, with a thermo-molded carbon fiber shank, 2.5 in tree gaffs and 1.86 in pole gaffs. The Notch Gecko Aluminum 3.0 weighs 5.3 lb per pair, has a reinforced fiberglass cuff and comes with 2.5 in tree gaffs and 1.75 in pole gaffs.
The Notch Steel Climbers with Ergonomic Tree Gaffs (99695T) are built from steel, molded plastic and foam, with tree gaffs, over 20 cuff adjustment points and an ergonomic shank to reduce leg fatigue.
!