2-to-1 synchro tilt for sitting back in style Synchronized tilt intelligently lets you recline comfortably. The Professional Matrex offers synchro tilt, which means the back reclines twice as much as the seat while tilting - so you can lean back and still keep the seat cushion relatively level to the floor. This feature provides proper weight distribution between your torso and legs, thereby improving circulation. Mesh material lets air circulate. The Professional Matrex chair lets you stay cool - the airy material wont keep the heat in. The back and seat cushion both offer this comfortable feature! Adjustable lumbar cushioning supports your lower back and enhances the natural curve of your spine. 1-touch seat-height adjustment for proper posture. Tilt controls for optimal positioning. Height-adjustable arms with polyurethane pads help alleviate shoulder strain. Heavy metal footbase is polished in Gunmetal Gray for a sleek look. Meets or exceeds ANSI/BIFMA Performance Standards. This chair has met quality standards for safety and durability established by the American National Standards Institute (ANSI) and the Business and Institutional Furniture Manufacturers Association (BIFMA). Dual-wheel carpet casters for easy mobility. Measures 46 1/4H x 27 1/4W x 25 3/4D. Easy assembly instructions included. Backed by the manufacturers 15-year limited warranty. GREENGUARD certified - certified for low chemical emissions: UL.COM/GG - UL 2818. Ranked in two tiers: Certified and Gold. Less harsh chemicals - made with fewer harsh chemicals, or safer chemicals than typical alternatives, helping reduce your use of and exposure to substances that may be more harmful to your health and the environment.