Comfortable pre-assembled retrofitting systems, consisting of spring elements, which, as a modular system, are suitable for all bed sizes and slants. By clipping the elements together an orthopaedic base is formed which supports the body in both lateral and longitudinal alignment. The chambers are permeable to air and support a healthy sleeping climate without condensation. A mattress made of cold-foam with a height of approx. 10 cm is recommended.
