IAFA - Black Rico Mid Back Ergonomic Office Chair with Fixed Arms, Tilting Mechanism, Heavy Duty Nylon Base. This Black Rico Mid Back Ergonomic Office Chair from IAFA is the perfect addition to any office space. With its fixed arms, tilting mechanism, and heavy duty nylon base, this chair offers superior support and comfort for long days at work. Enjoy improved posture and reduced strain on your back while you work, leading to increased productivity and overall well-being. Trust in the design and quality of IAFA to provide a premium seating experience for your daily work routine..