The deluxe mesh-back chair cradles you with a breathable mesh back and mesh fabric seat.The ergonomic mesh back surpports the natural curvature of your back for less strain during work at the computer or meeting at your desk. Multifucction control adjusts seat and back angles independently with two levers for infinite locking within a fixed range. For more individual comfort, arms adjust in height and width, and seat heiight can also adjust.Five-star nylon base is equiped with smooth-rolling casters for easily moving the chair where needed. The premium seat easily attaches to frame. Frame and premium seat ship separantely.