Big and Tall Double Air Grid Black Back Ergonomic Office ChairThe Big & Tall chair from SPACE Seating offers personalized ways to customize comfort no matter how much you work. A dual AirGrid® breathable back keeps you cool and relaxed while the adjustable lumbar feature supports your posture. Other features include one-touch pneumatic height adjustment, 2-way adjustable arms with PU pads, a gunmetal finish base, and dual wheel carpet casters. A thick padded mesh seat has both size and features to alleviate pressure and make your work life easier.Features: • Thick Padded Mesh Seat and Double Air Grid Back with Built-in Adjustable Lumbar Support • Seat Size: 22"W x 21"D x 4.25"T • One Touch Pneumatic Seat Height Adjustment • Back Size: 20.75"W x 22.25"H • Mid Pivot Knee tilt Control • Max Overall Size: 44.5"H x 30.25"W x 28.75"D • Adjustable Tilt Tension Control • Arms Max Inside: 22.5" • Height and Width Adjustable Arms with PU Pads • Arms to Floor Min: 25.5" • Extra Heavy Duty Gunmetal Finish Base with Oversized Dual Wheel Carpet Casters • Arms to Seat Height: 5.75" - 9.25" • Seat Travel: 3" • Arms to Floor Height: 29.13" - 32"Specifications: • Chair Dimensions: 28.63"W x 26.88"D x 45.38"H • Chair Weight: 56 lbs • Chair Weight Capacity: 400 lbs • Back Dimensions: 21"W x 22"H • Seat Dimensions: 21.75"W x 21.75"D x 4.5"T • Seat Height: 19.88" - 26.63"