Our ergonomic vinyl ESD chairs feature proper grounding, conductive, and dissipative static control materials and have been tested to meet ANSI/ESD-STM-12.1-2006. Additional ergonomic benefits include a contoured waterfall cushion and an adjustable back rest with lumbar support for increased comfort during extended sitting durations. Optional seat tilt provides 8 degrees forward and 3 degrees backward locking tilt for ergonomic posture support. These desk height ESD chairs feature several customizable options, including your choice of ESD casters or glides on a polished cast aluminum base, and static-dissipating color configurations. Each ergonomic ESD chair is backed by our 15-year warranty, lifetime on the pneumatic cylinder.