I already have 2 similar chairs Leco - I just for chair form of this kind as "the original" denote here. This chair here is more stable. (The dimwitted thumbscrew to stabilize the network, which is required in Leco falls away. The always fall out again at the Leco-chairs, as is worked grottig bad. And anyway conceptually ill-conceived, the need for this screw.) In addition, the material is pleasant to sit here in this chair. Not a long-term test, but spontaneously I am very satisfied.