LORELL Mid-Back Swivel-Tilt Chair with Flip-Arms provides ergonomic comfort during extended periods of sitting in office environments. Built-in lumbar support encourages better posture to prevent backaches. Fabric-upholstered seat adjusts in height to accommodate people of most heights comfortably. Breathable mesh back keeps you cool during use. Tilt/tilt-lock mechanism and tilt-tension adjustment allow you to customize settings to your personal preferences and lock them in for day-to-day convenience. Flip-up armrests feature padding for added comfort. Five-star nylon base moves on 2" smooth-rolling hooded casters and features 360-degree swivel for better mobility. Chair has a 275lb. weight capacity.