Abstract: A safety device including a boom with a primary end and a secondary end, where: —the primary end and secondary end are the opposite terminal ends of the boom; —the primary end is configured to be, releasably or permanently, attached to a mounting which includes a mounting joint which is a hinge joint; —the boom includes a base section, zero or one intermediate section and a load section connected together, in that order, by hinge joints, such that the safety device can extend from a mounting in a single plane, a movement plane, that lies parallel to the longitudinal axis of the boom, —the primary end is coterminous with an exposed end, a first base end, of the load section; —the load section includes a first load end and a second load end, where the first and second load ends are opposite terminal ends of the load section; —the secondary end is coterminous with the second load end; and the second load end includes a connection point, where the connection point is configured to releasably attach a user to the