The Nicer Furniture computer chair is definitely your top choice when it comes to price and quality. The breathable mesh back is ergonomically curved, which allows air to pass through, adding to long-term comfort by preventing body heat and moisture to build up. A slight curvature in the lower back supports for better seating posture and makes comfort for a long time sitting. Adjust the height of your chair according to your computer desk effortlessly. With the pneumatic handle located beneath the seat to the right, pull up to adjust the seat height. The foot ring adds extra height to the chair, while still remaining sturdy. Breathable mesh back with padded mesh seat Pneumatic seat height adjustment with chrome foot ring Fixed arms Dual wheel casters Dimensions: 19 inches (W) x 19 inches (D) x 45 inches (H) Screws are pre-installed in holes underneath the seat Nicer Interior Computer Desk Drafting Chair with Foot Ring - Black