LORELL Sortie Adjustable-Arm Mesh-Back Chair offers ergonomic comfort during extended periods of sitting at your desk. Height-adjustable lumbar provides necessary support right where you need it. Breathable mesh back keeps you cool during use. Fabric-upholstered seat adjusts in height to accommodate people of most heights comfortably. 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. Height-adjustable arms feature Polyurethane padding for added comfort. Five-star nylon base moves on 2" smooth-rolling hooded casters and features 360-degree swivel for better mobility. Chair features a weight capacity of 275lb.