HERCULES Series 24/7 Intensive Use Big & Tall 400 lb. Rated High Back Executive Swivel Ergonomic Office Chair with Lumbar Knob and Large Triangular Shaped HeadrestThis Big & Tall Executive Office Chair is an ideal chair for larger and taller professionals who spend long hours sitting behind a desk. An extended upper back with integrated headrest and lumbar knob reinforces healthy posture. The 25" wide swivel seat is double padded with 4" of foam. Raise or lower the seat using the pneumatic height adjustment lever for a custom fit. Generously padded loop arms reduce pressure on the shoulders and neck providing