A portable temperature-stable storage device for at least one object, the portable temperature-stable storage device comprising: a primary chamber (100) configured to store the at least one object； a secondary chamber (120) comprising: a first barrier (121) configured to, in an open configuration, provide access from external surroundings of the portable temperature-stable storage device to inside the secondary chamber and, in a closed configuration, prevent access from external surroundings of the portable temperature-stable storage device to inside the secondary chamber, and a second barrier (122) configured to, in an open configuration, provide access from the secondary chamber to the primary chamber and, in a closed configuration, prevent access from the secondary chamber to the primary chamber； and wherein the second barrier is adjustable between the open configuration and the closed configuration whilst the first barrier is in the closed configuration.
