A multipurpose hall where meetings, workshops, conventions, and conferences are to be held must accommodate event participants at spaces dedicated for this purpose; these must contain speaker and tip-up removable writing-table chairs for event participants that must give the environment ergonomics, comfort, and functionality. Leyform’s Ocean chairs are designed for this purpose; they are fire retardant, are lightweight and practical to move, are stackable up to 40 pieces, can match 7 finishes for the ? 11 mm round drawn steel frame (painted white, gray, black, red, blue, green, sand, and chrome) with 7 colors of the plastic monocoque (white, gray, anthracite, red, blue, green, sand), have a folding table where you can take notes or rest a laptop or notebook PC and, thanks to the special shape of the monocoque, they ensure ergonomics and maximum comfort while sitting even for long-duration conferences or seminars.