FurnitureR Mid-Back Mesh Ergonomic Office Computer Desk Task Chair (Black) Naturally curved mesh back helps to maintain good postures. Small yet solid, ideal for those who don't have a lot of space Simple seat-height adjustment; 360-degree swivel; smooth-rolling casters 330-pound maximum weight capacity; easy to assemble (instructions included) Seat size: 15.7"(W) x 14.6"(D); seat height: 13"-18"; back height: 17.5"