The seat and back of the chair are made of plastic material, and leggs are made of steel tubes...

The idea was to design an accessory that would be the fruition of the "thinking outside the box"process, but also an object with a clear practical use.
1.You buy a one size wrist watch, made of silicon rubber and steel
2.After separating the mechanical part, you place the silicon rubber in to a boiling water
3. Take it out of the water and after few seconds adjust the length by your own wrist...