Crafted for tree workers who count weight by the gram during a full climbing day, this aluminum-frame tree climbing spike set drops total carry to 8.82 lb. while still rating up to 350 lb. of user capacity. Tested per ASTM-F887 standard for deformation, the spurs adjust from 15.75 to 19.09 in. of frame height to dial a custom fit, and forged heat-treated steel spikes bite into bark for confident grip on rough oak, smooth maple, or aged fruit trees. Soft EVA padding and molded thigh plates conform to the lower leg, easing the pressure points that turn into bruises after long sessions in the canopy. The complete kit pairs the spurs with a sit-in security harness, hook-and-loop straps, a utility rope, and 2 spike protectors that keep sharp points safe during transport in a truck bed or shop. Built for arborists, orchard workers, hunters setting tree stands, and recreational climbers picking ripe pears or pruning back high limbs. Important safety note: this kit is not certified as fall protection equipment and is for positioning and utility use only, not as a primary security rope. Worried about how the spikes hold under repeat use? The ASTM-F887 deformation testing covers the long-cycle fatigue most hobbyist gear skips entirely.