Leitz Ergo Active stool with castors and balance comfort seat. Elegant and ergonomic balance stool with castors for active employees and comfortable sitting. 60 cm wide base for a stable stand. Unique comfort seat in triangular shape with firm, ergonomic support core for even distribution of weight on the pelvis, surrounded by soft foam padding to reduce pressure on the thighs and legs, similar to a saddle stool. The 9 cm thick and movable comfort seat with patent-pending 360° DSM Dynamic Spine Motion technology promotes dynamic sitting for employees working at a desk, strengthens the back and core muscles and improves well-being by providing an extremely comfortable sitting experience similar to a seat cushion. Lightweight and mobile with 5 smooth-running 360° castors that increase safety by increasing resistance when the chair is unoccupied and preventing unintentional movement. Stepless pneumatic height adjustment from 47 - 60 cm using the easily accessible 3 levers under the seat to set the perfect seat height. Compact design for stowing under a desk. Suitable for all floor types. Tested and recommended by the German IGR, the Institute for Health and Ergonomics, in accordance with DIN 26800 EN ISO 15537. Quick and easy assembly without tools in just a few steps. Fully recyclable, plastic-free packaging.