Colamy Atlas ergonomic mesh office chair designed for home and professional use. Features breathable high-back mesh imported from Korea for superior ventilation and spine support, adjustable lumbar support, and a height-adjustable, tilt-locking mechanism for personalized comfort. The chair includes a 4D adjustable armrest, an adjustable headrest with angle and height positioning, and a sliding seat for customizable depth to promote proper posture. Built with durable metal and aluminum components, supportive foam seat cushion, and a sturdy nylon base rated to 300 lbs. Easy to clean with a wipeable surface and backed by a warranty. Dimensions: 27.76 x 28.94 x 51.38 inches, shipping weight 56 lbs, product weight 49.16 lbs.