Breathable mesh back conforms to the upper body for added comfort. Upholstered seat features detailed stitching for an upscale look. Waterfall seat edge promotes better leg circulation. Center-tilt mechanism rotates the seat from a point at the center to comfortably recline. Tilt tension controls the rate and ease of recline. Upright tilt lock secures the chair in the full upright position. Pneumatic seat height adjustment moves the seat up and down to adapt to various body heights. 360-degree swivel provides freedom of movement in any direction. Warranted for users up to 250 lbs.