These Type I belts can help maintenance or industrial workers at heights stabilize their work position, while leaving their hands free for the task. As a positioning device, the belt must be anchored to a structure so worker cannot free fall more than two feet.14"W nylon web construction includes a tongue buckle fastener with separated webbing weave and inserted grommets for extra strength. Single D-Ring Belt has full ring in center of back. Double D-Ring Belt has one full ring on each side. Both belts are available with full 3"W nylon back pad for support.