Abstract: A multi-purpose closed trailer for use with motor vehicles, providing walk-in access with a low frontal area for energy-efficient highway operation.A lightweight cover having a lockable, top-hinged rear door/window is matched with a trailer load bed, to which it is hingedly attached at the forward end. Suitable compression struts and attaching bracketry, latching means, sealing means and a lift handle are arranged in such a configuration relative to the cover and load bed as to provide:(1) availability of locked security in a closed cover position,(2) access to interior in a closed cover position,(3) ease of opening of the cover from a single operator location,(4) support of the cover in a raised, open position for purposes of walk-in access,(5) accommodation of removable, fitted kitchen and convertible bed/seat units for camping use,(6) accommodation of removable, flexible panels to provide full enclosure with a raised cover.