Leitz Ergo Active Sitting Stool With Comfort Seat Light Grey - 65440085The Leitz Ergo Active Sitting Stool features a unique Dual Density Foam (DDF) comfort seat with firm ergonomic support core. Similar to a saddle stool, the triangular shape distributes weight evenly across the pelvis and is surrounded by soft foam cushioning to reduce pressure on the thighs and legs. The 9 cm thick seat is designed for comfort and can be used to fully sit or lean which encourages users to sit more upright, providing an ultra