The Herman Miller Aeron Stool - Counter Height, Carbon brings you a remastered version of its 1994 counterpart, blending quality ergonomic excellence with new and improved health-positive adjustments. Upgraded 8Z Pellicle material brings greater comfort on body contact and allows air, body heat, and water vapor to pass right through. Maintains even and comfortable skin temperatures, and allows adjustable sacral and lumbar supports for better posture. The only stool you’ll ever need.