Reve Seating gives you a new reason to daydream. The contours of the chair provide lumbar support while the perforated back gives it breathability, ensuring uninterrupted comfort. Ganging connector glides on the sled base allow you to use multiple chairs to set up an integrated welcome area. Chairs store easily and stack up to 12 high. Rounded black back (18" wide x 13-3/4") and sculpted seat (18-1/2" wide x 17" deep x 18" high) are made of plastic. Weight capacity is 250 lb.