The GTPLAYER task chair features ergonomic design curves that better conform to your back. The adaptive support at the back of the chair provides ample lumbar support even when reclining. The breathable mesh back keeps you comfy, helping you avoid a sweaty back during long sitting hours.Our office chair features 90° flip-up armrests. The gas lift has a 3.93" height adjustment, making this study chair suitable for both petite and big and tall individuals. Unlock the tilt function and adjust the rocking function between 90° to 120° with the bottom knob. The 360° swivel seat allows you to enjoy personalized comfort. | Cloudrest Pro | | Breathable Mesh Office Chair with Flip-up Armrests Ergonomic Computer Desk Chair with Adaptive Lumbar Support | Black | Best Buy