Image source: Herman Miller — Zeph Stool
© Herman Miller and the respective rights holders. Quoted to accompany INTEBEE's independent design commentary and research.
Zeph Stool
A height-adjustable stool whose kinematic monoshell reclines through its own geometry.
615 × 1194 × 480 mm
Approx. $890 (reference price; varies by region and retailer)
Official product information
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Go to the official product pageDescription
Moving monoshell
Studio 7.5 shaped Zeph Stool around a kinematic monoshell that provides a balanced recline without manual adjustment. The five-star base swivels and the seat height adjusts pneumatically.
Textile options
The molded shell can remain uncovered or accept a tool-free 3D Knit seat pad or unibody. Herman Miller states that the knit uses 50% post-consumer recycled polyester and is produced with zero fabric waste.
Dimensions
The fixed-arm version is 24.2 in wide, 18.9 in deep, and 39.1–47 in high, with seat height adjusting from 24.2 to 32.1 in.
Story
Animating a shell stool
Studio 7.5 used repeated 3D-printed prototypes to make a shell form move with the sitter. Its geometry uses the body’s pivot points as a counterbalance, creating recline through the shell rather than a separate set of user controls.
Fewer parts, interchangeable layers
The underlying shell can work alone or receive a removable textile layer. A seat pad clips around the seat, while a unibody wraps the seat and back; both can be added or exchanged without tools.
More by Studio 7.5
Setu Stool
A height-adjustable Setu stool built around the Kinematic Spine
Zeph Side Chair
A side chair with a kinematic monoshell, optional 3D Knit, and four-leg base.
Mirra 2 Stool
A high-performance ergonomic stool with responsive back options and an adjustable footrest.
Setu Side Chair
A flexible side chair with a Kinematic Spine, suspension choices, and four-star base.