Cuboid organizers are soft containers excellent for travel and ideal for items that don™t wrinkle when folded or rolled. Their mesh areas allow viewing of contents. They are spec™d to fit within each other. Two #1803 Medium CUBOID will fit into one #1802 Large CUBOID. Two #1804 Small CUBOID will fit into one #1803 Medium CUBOID. When not in use, they can be stored within each other to save closet space.