Large alloy base for stability fitted with twin wheel hooded castors. Heavy duty gas seat height adjustment. Posture curved seat with waterfall front. Stylish mesh backrest with adjustable lumbar support & headrest. Quality synchronised mechanism with tension control adjustable for individual body weight. Height adjustable arm rests. Dimensions: Width 53cm x Depth 50cm x Back Width 53cm x Back Height 65-85cm x Seat height 46-54cm