the innovative design of the mattress has been patented, the ergonomic shape of the mattress allows you to rest comfortably in a lying position, and after folding one part in a sitting position, the set includes a special mattress roller with a diameter of 25cm, serving as a headrest, the mattress should be dry cleaned. the colors differ in reality from those shown in the photos. The black mattress has a fabric in solid black color, and the gray, is a fabric in graphite melange.