The Circa has separate structures for the backrest and seat with the former in painted moulded aluminium and the latter in curved solid wood. Automatic tip-up seat. The Circa seat comes in two versions: Circa Auditorio is equipped with rubber elbow rests; Circa Kursaal has metal elbow rests covered in leather. The Kursaal can also be fitted with a foldaway writing table. Upholstery in Pelle Frau® leather, fabric or velvet. Installation in straight or curved rows.