The Spine Align is constructed from comfort fit foam that cradles your body as you sit. The unique seat back features floating lateral lumbar support to support your back without pressure on your spinal cord. Great for users with back problems. The head rest adapts naturally to your posture, giving you the support you need while you work. The Spine Align features stain resistant textured upholstery on the seat and seat back. Chair meets the flammability requirements of California Bureau of Home Furnishings Technical Bulletin 117. Arms are constructed from wear resistant polypropylene. The chair features BIFMA approved tilt adjustment and adjusts pneumatically in height from 16" to 20". The durable base includes 2" dual wheel swivel casters.