Newly developed seating alternative or standing aid for active sitting. It trains the back and acts preventively against back problems. Versatile use in the office, workshop, kitchen, and home. The stool promotes movement at both sitting and standing workstations. Infinitely adjustable seat height with a black-coated gas spring featuring a "Clean Effect," which self-cleans through a stripping mechanism, ensuring it remains free of oil film. The absolute novelty of this product is the patented sole. It is molded from thermoplastic materials and divided into individual segments. Like a high-tech sports shoe, the sole adapts optimally to the surface and incline. This gives the stool a unique movement behavior, making it extremely dynamic while still being very stable and secure. The base combines with a colored sole and plastic applications.