Professional AirGrid Back Managers Chair with Black Mesh Fabric SeatSometimes simple is better and the 5500 basic design is an excellent example of simplicity at its best. It has an open air grid back that conforms to your back for passive ergonomic support. Also features 2-to-1 synchro tilt, pneumatic seat height adjustment and angled adjustable arms. GreenGuard Indoor Air Quality Certified.Features: • Thick Padded Contour Seat and AirGrid • Back with Built-in Lumbar Support • One Touch Pneumatic Seat Height Adjustment • 2-to-1 synchro Tilt Control with Adjustable Tilt Tension • Height Adjustable Angled Arms with Soft PU Pads • Heavy Duty Angled Nylon Base with Oversized Dual Wheel Carpet Casters • Arms to seat height: 6.25" - 9.25" • Arms to floor height: 25.5" - 29.75"Specifications: • Chair Dimensions: 26.5"W x 25.25"D x 42.25"H • Chair Weight: 33 lbs • Chair Weight Capacity: 275 lbs • Seat Dimensions: 20.5"W x 19.5"D x 3.5"T • Seat Height: 18.75" - 23" • Back Dimensions: 20.5"W x 18.5"H