The New Smoke Aeron Posture Fit Support Kit is designed specifically for Herman Miller Aeron size A chairs, offering additional support for improved posture while sitting at a desk or office workspace. This product, made by Herman Miller, is tailored for office/desk chairs, ensuring a comfortable and ergonomic seating experience for users. With its sleek design and high-quality construction, this support kit enhances the overall functionality of Aeron chairs, providing users with a more personalized and supportive seating option.