Wellness By Design Flexible AIR Lumbar Technology pivots and conforms the lumbar area in response to movement to improve posture and provide better back support than standard chairs,ComfortCore® Plus with Memory Foam advanced layering system provides varying support for optimal comfort, stability and durability,Memory foam layer conforms to deliver individualized support,Poly-fiber top layer adds to overall plushness and give,Softer support layer at front of seat cushion for flexible comfort,Firmer support layer at back of seat cushion for stronger support,Mid-layer seat cushioning adds stability and durability,Top layer seat cushioning helps alleviate discomfort,Plush pillowed body layers provide cushioning and pressure point relief,Elevated and padded headrest offers comfort and improves neck support,Supports up to 250 pounds,Some assembly required