28 elastic wooden slats with 7 lying zones. Not adjustable. Particularly robust and durable due to the suspension caps being mounted on sturdy bolts and multi-veneered plywood, including a protective coating against moisture. Individual hardness regulation in the middle lying area to adapt to the weight and the desired lying depth. Highly flexible sprung wooden slats guarantee optimal sinking in when lying on the side and perfect support when lying on the back. Harmonious pressure distribution and stabilization thanks to the central belt. Quick and easy assembly with illustrated assembly instructions.