From the designer:Cloud is a sofa concept designed for ultra comfort and relaxation. The soft floating upper part is supported by the magnetic force generated by the bottom base. No matter if you want to work and sit with comfort or simply a power nap to release the stress, you can always enjoy your time to relax on the floating cloud~
http://geekouttime.blogspot.com/2009/04/cloud-magnetically-levitating-sofa.html