Upon arrival of the chair my first praise was for the good assembly of the chair. While it sees first from confusing between twenty or thirty parts to fish out of the box. All parts are carefully packaged, making something work when auseinanderdröseln. The actually building is then, however, surprisingly slight of hand. You have no screws and everything will become a stable whole.
Sitting on the chair conveys very quickly a relaxing feeling. The settings are sufficient for my needs. The maximum seat height should have been a bit bigger. For me (about 195 cm) it is still just enough.
There are roles included that seem to be suitable also for smooth floors.
Actually, the only major complaint I have is the rather high price. For 150 euros less it would have done probably.