Seat measures 16″ in diameter.
, Teal Adjusts in height with a 360 degree handle operated by your foot.3 different base configurations:Black CompositeBright ChromeAluminum Base with Toe Caps2 different pneumatic height adjustmentsStandard: 19″-24″High: 23″-32″2 Backrest options:B-Upholstered BackrestCB-Crescent BackrestWeight capacity 300 lbs.-Std.