Abstract: In the so-called `ski-coaches` special chairs are used, the back rests of which can be swung up to form an upper row of bed elements. Mostly, particularly the back rests are of such a special design that in fact the chairs are unusable as normal coach chairs during the entire period outside the skiing season, and it is customary, therefore, to change out the entire seat installation before and after this season. According to the invention the chairs are adapted such that they will be universally usable, i.e. by way of a conventional front side profile and by an upper carrier element mounted inside the back rest, whereby the rear side of the back rest will exhibit no visual sleeping fitting. The carrier element is located spaced underneath the top end of the back rest, whereby the sides of the uppermost portion of the back rest may be designed in an attractive, upwardly converging manner.