Seating refers generally to furniture elements used for humans to sit. Including a large variety of typologies that selectively incorporate seating surfaces, seat backs, armrests, headrests, and legs, seating is one of the most universally useful and aesthetically diverse furniture categories. Common forms of seating include armchairs, lounge chairs, stools, benches, side chairs, office chairs, sofas, ottomans, and poufs. Seating design is concerned primarily with the ergonomics, comfort and materiality of the furniture piece. The following collections of seating options have been compiled across multiple seating typologies to better illustrate the diversity of seating designs.