The high-tech material used in automobile and aircraft construction is robust and very light. The system consists of single cubes, each cube weighs only approximately. 1 kilo can be used individually and can be mounted on a full and flexible rack system using hidden buttons. Holds a cube approx. 15 kilos. Height adjustable powder coated metal feet flatten the system on uneven ground. Metal cube tops refine the surface of the side panels and bed side tables.