[Ergonomic] Ergonomic design emulates the natural shape of the spine to increase comfort and productivity. The gas lift allows the user to modify their height in relation to their work surface, leading to an increase in comfort and ergonomic benefit. [Adjustable Height] Adjustable seat height with a 6" vertical height range; Seat dimensions: 16"W x 16"D x 20.5"-26.5"H, Max product height: 39.5” [Stable Base & 360° Swivel] Dual wheel casters and 5-star nylon base allow for easy movement; Attractive chrome finished 20” foot ring; 275-lb. weight capacity [Quality Materials] Upholstered in durable antimicrobial vinyl for easy maintenance and comfort [Assembly & Dimensions] Ships ready to assemble; Installation manual provided below; Product dimensions: 24"W x 24"D x 33.5-39.5"H