The Vitra Physix chair is based on the idea of creating a continuous seat shell by stretching fabric across two side beams. The Physix chair is the latest in a line of iconic chairs that use cutting-edge materials and production technology to create a unique sitting experience. The Physix chair is height adjustable, tension control and angle locking function. To create Physix, Alberto Meda and Vitra developed a multi-thread, highly resilient contoured knit that is so elastic, it allows the seat shell to take on a three-dimensional shape.