Like all Humanscale chairs, the World One’s design eliminates the need for traditional mechanisms by using the laws of physics and the sitter’s body weight to offer a perfect recline. World One features armrests that are attached to the back of the chair and move with the user, providing custom comfort throughout the workday. A high-value task chair with minimal parts, World One was built with longevity in mind to look as good in ten years as it does today.