Office Master BC49 Black Fabric Wide Body Multi-Function Drafting Bar Counter Stools Chairs Extra Wide Seat &amp; Back For The Larger Users / 250LB Weight Capacity Pneumatic Seat height From 23" to 33" / 20" Adjustable Height Footring Multi-Function 2-Paddle Control Allows Back &amp; Seat to Articulate / Back Height Adjustment Heavy Duty Dual Wheels Casters on Oversized Base / Black Fabric Back Size 19W x 17.5H / Seat Size 19W x 19D / 12 Year Limited Warranty