Virco's Civitas 4-Leg Chairs features stylish legs for a casually chic and inviting effect. The ZUMA Series 18" Chair with Civitas Frame is a 4-leg chair made with a tubular steel frame and a one-piece, molded polypropylene shell. The ZUMA Seat offers a flexible backrest that incorporates passive ergonomic features for long lasting comfort. The 18" seat height is an ideal size for 5th Grade - Adult.