Vitra Physix Office Chair by Alberto Meda 

The structure of Physix is based on the idea of creating a continuous seat shell by stretching a single textile panel between two side members.
Its iconic design is achieved using state of the art materials and production technology.
An interplay of three elements are used to create a dynamic sitting experience; a flexible frame construction, an elastic cover and a stabilising mechanism.
Together these three characteristics form a construction that allows new possibilities of dynamic sitting through the interaction of flexible and rigid elements.