Poland Office Chair is a mesh back & fabric base combination that gives you a long hour comfort. The armrests are ABS based built sturdily & hold your arms for a long period without tension or pain. The chair is equipped with steel chrome hydraulics syncronised with chrome wheelbase. 360 swivelling Portland also comes with height adjustable levers & fixed low back lumbar support element. The base frame chassis, hydraulics & wheelbase w/ wheels are covered by 1 year comprehensive warranty.