1Auditorium chair with wood shell of seating and backrest 2. mould cold foam upholster ... Cinema, university, school, Training center, Stadium,Sport,Arena,bleacher, Platform,stand and Grandstand. : 1. seat outer cover and back outer cover ... back cushion are made of molded PU(polyurethane) foam upholstery with fabric or PU artificial leather.3. PU foam density:55kgs ...