Hon 4300 Series Passive Ergonomic Swivel Task Stool 4300 Series Perpetual® Seating: Passive Ergonomic Swivel Task Stool Dynamic seating solution automatically enhances comfort and provides continual support. Frame is solid steel wire, which allows the seat and back to flex independently. Upholstery has stain-resistant protection. Pneumatic seat height adjustment and 360° swivel. Seat: 17-1/2w x 19-1/2d. Back: 17-3/4w x 12h. Footrest: 14-1/2w x 7-1/2 to 17-1/2h. Overall height 43" to 47-1/2". Meets or exceeds ANSI/BIFMA standards. The HON® Limited Lifetime Warranty. Shpg. wt. 53 lbs. (Can not ship UPS.) Casters supplied with this chair are not suitable for all floor types. Alternative casters are available to meet your specific needs. 51% Polyester/49% Acrylic Upholstery Black Base Lava Fabric