BEVCO's Carrington Series provides unprecedented comfort and ergonomic adjustability at a high weight capacity. This high capacity chair has been rigorously tested to meet the requirements of larger workers. With infinite adjustability, the rocker tilt control helps users find the right setting for their body, therefore reducing back pain, muscle aches, and stress. A 4" thick waterfall seat features high-density foam built for maximum comfort and years of reliable use. An easy-to-use pneumatic height adjustment of 19–22″. Upholstered ESD vinyl meets requirements of ANSI/ESD STM12.1-2019. A large contoured back provides full ergonomic lumbar support. This chair comes with a sturdy 28" diameter polished aluminum base with brass drag chain. Model comes standard with ESD hard floor casters designed for heavy-duty use are 50% larger than standard casters.