A portable temperature-stable storage device configured to enable transport of a plurality of temperature-sensitive objects at a stable temperature, the portable temperature-stable storage device comprising: an insulating enclosure for storing the plurality of temperature-sensitive objects; an aperture in a wall of the insulating enclosure; a first barrier disposed across the aperture and configured to be moved between an open configuration and a closed configuration; a plurality of compartments for storing the plurality of temperature-sensitive objects, the plurality of compartments being comprised within the insulating enclosure, the plurality of compartments being configured to move relative to the aperture; and means for moving the compartments in turn into alignment with the aperture while the first barrier is in the closed configuration.