The present invention is a protective sleeve for containing medical lines, comprising: (a) a foldable sleeve comprising first and second side panels, and adapted to be opened and closed along its longitudinal axis so as to form a conduit for medical lines, at least one of the panels being transparent, the foldable sleeve adapted to be reversibly opened along its longitudinal axis, and having releasable closures to maintain the foldable sleeve in a folded closed position and (b) a plurality of rigid members incorporated into the sleeve and along the longitudinal axis.