Armrests rotate backwards to save space when not in use. Armrest height adjusts vertically to multiple positions with the push of a button. Slide the molded armpad forward & backward. Slide the molded armpad side-to-side. The SynchroTech seat plate with adjustable tilt tension lets you enable recline with the easy-to-reach lockout lever. Rotate the under-seat tension knob to adjust the ease of recline. Adjustable chair height features 3.7" of height adjustment range controlled with an easy-to-reach lever. Adjustable lumbar zone can move up & down or in & out to provide just the right amount of support intensity. Upholstered in a soft-touch fabric, get comfort that lasts from the layered foam seat with a waterfall seat edge providing the support you need. Easily spot-clean with a damp cloth. Breathable suspension mesh on the back helps keep you cool on long workdays while providing constant support. Durable construction and a heavy-duty metal base ensure this chair is rated to support users up to 275 lbs. It's easy to assemble with no additional tools required. Dual-wheel 360° mobility casters quietly roll over most carpet types. Casters are intended for use on carpet and not recommended for use on tile or hardwood floors. Overall Dimensions: 26.2" L × 28.5" W × 39.5" - 43.2" H. Seat height: 18.5" – 22.2". Seat depth: 19". Weight: 36.15 Lbs.