Office Chair, Big and Tall Executive Office Chair with Footrest & Removable Headrest, High Back W2367P257163Ergonomic Office Chair: Big And Tall Office Chair Is Designed For Sedentary, Its Lumbar Support And Headrest Conform To The Curve Of Human Lumbar And Neck To Help You Adjust Your Sitting Posture And Relieve Back And Lumbar Spine Pain During Long Working Hours. The Cushion Is Made Of Upgraded Sponge And Independent Spring Packs, Soft And Super Comfortable, Realizing The Balance Of Support And Soft Comfort, Not Tired Of Sitting For A Long Time.