The 8000 & 9000 (with headrest) Series chair sets the standard as an industry leading ergonomic chair. Crafted to promote maximum comfort for sophisticated individuals, these series adjust to fit the 5th to 95th percentile. Combining demands for both support and luxury, the 8000 & 9000 Series creates a stress reducing sensory experience while liberating movement, reducing obstacles and enhancing tranquility for optimum employee production.