A classic silhouette meets science-backed ergonomics in the Zeph Stool from Herman Miller. This high-performing, high-value stool's kinematic monoshell automatically adjusts to the body for synchronized movement. The geometry of the design allows your body’s pivot points to create the right counterbalance for a proper ergonomic sit. An optional, removable, and interchangeable 3D Knit cover easily slides directly into the shell, no tools required, and can be swapped out for new color choices when your space needs a refresh.