Herman Miller Aeron Chair B Graphite. Aeron Chair Size B provides optimal ergonomic support for people between 5’3″ and 6’6″ in height and weighing between 140 and 300 pounds. The 8Z Pellicle seat and back provides ideal support across eight zones of varying tension. It’s also breathable to eliminate heat build-up and improve seated comfort. With adjustable Lumbar Support’s the lumbar regions of the spine, which helps it maintain its natural S-shaped curve, also includes adjustable arms. When bill Stump and don Chadwick designed the Herman Miller Aeron Chair, they combined a deep knowledge of human-centered design with never-before-seen technology to create a task chair unlike any other. Now Aeron has been premastered in practically every way, resulting in a piece that better supports people and the types of work We do today. The 8Z Pellicle suspension seat and back is divided into eight zones of varying tension that cradle and support The body. Adjustable individual pads provide lumbar support and stabilize the base of the spine for a more powerful seated posture. Whether leaning forward or reclining back, Aeron supports you through the entire range of motion, keeping your movements smooth and balanced. Design doesn’t get any more civilized. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.