The invention relates to a device for storing objects in a loading space (11) of a motor vehicle (1, 101) having a storage container (2, 702, 802) which can be attached to the loading space (11) of the motor vehicle, wherein the storage container (2, 702, 802) has a supporting surface (21, 821) and a wall (20) which can deform at least partially elastically and/or inelastically, characterized in that in order to change the volume of a storage compartment a height of the wall (20) can be changed at least in certain sections by an adjustment device comprising at least one winding shaft (61, 61a, 61b, 61c, 61d), the adjustment device has at least one detachable securing device (8, 108, 208, 308, 408), and a rotational movement of the at least one winding shaft (61, 61a, 61b, 61c, 61d) can be locked by means of the detachable securing device for the purpose of transportation, with the result that at least a lengthening of the wall (20) is prevented during transportation, and/or the adjustment device comprises an extension-limiting device (9, 408, 509) which limits a maximum extension movement of the at least one winding shaft (61, 61a, 61b, 61c, 61d).