This is the popular Catifa 46 Swivel Chair by Arper, featuring a white molded polypropylene plastic shell seat on a 5-star swivel chromed steel trestle base. The chair is mounted on self-braking castors and includes a pneumatic gas height-adjustment mechanism. These versatile chairs are perfect for use as a desk, dining, or conference chair. Dimensions: Overall: 26" W x 26" D x 30.5-34.5" H Seat Height: 16.75-20.63" H Seat Width: 21.5" Seat Depth: 17"