"SL1800 | Ergonomic Office and Gaming Chair Say goodbye to back pain and discomfort with the revolutionary SL1800 - where cutting-edge ergonomics meets unparalleled support. Our patent-pending ContourMax™ Lumbar System intelligently contours to your spine's natural shape and movement, providing dynamic support that maintains perfect posture whether you're working or gaming. The breakthrough VertaAir™ Seat Technology features advanced air emission tunnels that actively relieve pressure on your sit bones, promoting better circulation and keeping you cool during extended sessions."