DXRacer KB57/NB Black Blue Racing Bucket Seat Office Chair Gaming Ergonomic with Lumbar Support Ergonomic design - more efficient and comfortable, with bonus headrest cushion & lumbar support cushion Extra high backrest to support neck and spine, Flexible seat back with adjustment Patent race car seat design with breathable material: Smooth PU vinyl cover and strong mesh Special soft armrests with adjustable pieces to comfort shoulders and wrists Newly designed heavy duty aluminum base with latest footrests and a conventional tilt mechanism