The objective in PIX’s design was to create a space-saving chair. The result was a stool which can manually be height-adjusted from 210mm to 380mm.
The height of the stool can be adjusted by lifting the seat. The working principle is simple: there are small beads inside the hollow seat, and when the seat is slightly lifted up, the beads run inside the leg and lock the seat on a desirable height. When the stool is turned upside down and the foot is slightly lifted upwards, the beads will run back inside the seat. The seat can then be pushed back down.