Compact and lightweight. Zinc-plated steel self-locking snap hook at one end and Wrapbax™ hook at other. Hi-10™ Vectren™ energy absorption system delivers excellent abrasion/cut/chemical resistance, immediately extends and absorbs energy during a fall to limit arresting forces to safe levels. Impact indicator. Built-in reflective materials on the shock absorber cover for low light conditions. Equipped with i-safe™.