Balt's ReFlex Fabric-Upholstered Task Chair uses an innovative ergonomic design to provide all-day support. The adjustable, spring-powered lumbar support makes it easy to find a comfortable position, and the sturdy plastic frame is thickly padded and upholstered to provide a soft seat for anyone in your office. Pneumatic seat height adjustment, tilt lock and tilt tension controls let you customize your office chair to fit your body. It's easy to move around your office, thanks to the durable metal star base with dual-wheel casters. Choose your task chairs in black or gray upholstery. Add adjustable arms for an additional cost.