Multi45functional ergonomic design adjustable back height and lumbar support adjustable seat height and slide synchro mechanism with four locking positions height45 and pivot45adjustable padded armrests optional leather headrest easy45move five point base mesh backrest and leather seat supports weight of up to 235 stonemeasurementsseat width 515mmseat depth 460mm seat height 45045520mmback width 515mm back height 535mmarm height 640mmoverall height with headrest 1140