Summit Viper SD Limited Self Climbing Bow & Rifle Deer Hunting Treestand | 81537 Dead Metal Sound Deadening Technology which neutralizes uninentional noise with noise-canceling foam in internal parts QuickDraw Cable Retention System - once the cable is sized for the tree diameter, all you have to do is insert the cable into the QuickDraw bracket of the suspension arm, pull the "trigger" and the cable securely locks into place (no fumbling with pins, knobs, nuts) SummiLokt precision welding - provides maximum rigidity for safety and strength Rapidclimb climbing stirrups are ergonomically shaped and adjustable to fit any boot Comes complete with a 4 point safety harness