Herman Miller Aeron PostureFit Support Kit Size B Graphite Chair Accessories. Aeron PostureFit Support Kit Size B. California Prop 65 Warning. Herman Miller Aeron PostureFit Support Kit: Unlock a Healthier Posture The Herman Miller Aeron PostureFit Support Kit is a game-changing add-on designed to transform your sitting experience. This innovative kit is specifically crafted to provide optimal support and promote healthy posture, ensuring a more comfortable and productive workday. Compatible with all size B Classic Aeron Chair and Classic Aeron Stools, provided the chair has a Tilt Limiter option. This is the support kit ONLY – chair is not included. Installation takes minutes and will feel like a brand new chair. Solution for a healthful posture and significant improvement toward lower back support in a work chair. Why You’ll Love It: Take the first step towards a more comfortable and ergonomic work experience. With the Herman Miller Aeron PostureFit Support Kit, you’ll enjoy improved lower back support, reduced discomfort, and increased productivity. Say goodbye to back pain and hello to a healthier posture with this essential chair accessory.