Buy Office Star Breathable ProGrid Back with Leather and Mesh Seat Adjustable Black Managers Chair and Nylon Base: Adjustable Chairs – Amazon.com FREE DELIVERY possible on eligible purchases High back ergonomic chair with pneumatic seat height adjustment for customization Office & Conference Room Chairs : Create a professional environment with these office and conference room chairs. These ergonomic chairs support your posture and help you stay alert while working. Free Shipping on orders over $45 at Overstock.com – Your Online Home Office Furniture Store! Get 5% in rewards with Club O! .