F4 represents an evolution in user-responsive seating, a graceful, lightweight appearance, and timeless styling. Through thoughtful material selection and component design, F4 was created to comfortably and effortlessly move with its user a
F4 provides a unique torsion-spring mechanism that is totally concealed within its frame. The geometry of the chair, in combination with the springs, provides comfortable support for a broad range of users without adjustment.nd support a broad range of seated gestures without requiring manual adjustments.
Design and options
Backs may be mesh or upholstered in one of three different styles. Knit seats are an option to match the full range of mesh colors. Frames are available in either polished aluminum or one of 20 powder coat finishes.