About a month ago a support for the rest is canceled. Had then removed both Lean and use it now without further ... Those who do not necessarily need backrest can strike confidently.
One thing I should perhaps mention: The chair can be fairly creak. Compared to the cheap parts but that is not nearly as flashy / disturbing. Tip: If it but very noisy and often the case, it may help to turn the screws a little looser or fixed :)
LG