Abstract: Seating furniture can be configured for mounting on a carrier element. The carrier element may be part of a stand in a stadium, a frame for a park bench or a carrier element mounted on other established foundations or on other natural foundations. The chair distinguishes itself in that the chair can be mounted on or demounted from the carrier element without difficulty. The chair includes a profile provided with jaws extending around the carrier element and which is fastened to the carrier element. As a result, it is much faster to provide new seats, for example in a stadium, and it is easier to replace individual chairs which may have been damaged. In a preferred embodiment the chair is provided with a pivotable seat. In alternative embodiments, a back of the chair is also pivotable, just as the seat and the back may extend over more seats and thus constitute a bench.