At four ounces, the Blue Ice Addax Harness might be the lightest harness on the market actually designed for climbing. Most harnesses hovering around this weight are only supposed to be rappelling, but the Addax has all the certifications required for lead climbing. Despite its lightness, the harness is surprisingly comfortable with padded mesh that provides well-ventilated cush. The self-locking waist buckle and elastic leg loops provide a quick-and-easy fit.