Olson Stacker Chairs without arms offer sturdy polymer seats and backs for comfortable versatile seating and a convenient storage solution. Chairs stack up to six high easily. Handy grip in back makes them easy to transport. Back features designed-in lumbar support. Seat size is 18" wide x 18" deep. Seat-to-floor measurement is 17-1/2" high. Back measures 20" wide x 15-1/2" high from the seat. The steel wire frame with chrome plating is 7/16" in diameter. The seat and back are made of 1/8" thick textured polypropylene. Each chair offers a 300 lb. weight capacity for users and meets or exceeds applicable ANSI/BIFMA standards.