The Leitz Ergo Active stool has a unique Dual Density Foam (DDF) comfort seat with a firm ergonomic support core. Similar to a saddle stool, the triangular shape distributes the weight evenly across the pelvis. Thanks to the particularly soft foam padding around the support core, pressure on the thighs and legs is reduced. The 9 cm thick seat is designed for comfort and can be used for both sitting and leaning, which encourages a more upright sitting posture and provides an extremely comfortable sitting experience similar to that of a Si. Elegant and ergonomic stool for active working, compact design for placement under a desk.