Like new Herman Miller Aeron Chair Size B Fully Black W/Posturefit is fitted with adjustable arms, tilt limiter, posture fit back support, Black color frame and carbon classic pellicle seat/back meshes. Posture fit unit the adjustable PostureFit SL option, for a more comprehensive enhancement on seated comfort. This chair addresses these common issues, by providing a chair shape and material that are specifically designed to spread the weight of the body evenly over the surface, reducing pressure points while improving posture and comfort. Plus, the Aeron’s mesh fabric is highly breathable, so you’ll stay cool and dry, regardless of the season. You’ll love the luxurious, comfortable feel of this high-end office chair. These models are available with an optional headrest, and soft rubber casters. This model is available in size B.