Dangerous chair
No problem with LDLC (fast delivery and good packaging).
However, after one and a half years of full time use (8 hours per working day - professional use), the right-hand slide of the seat broke without warning, causing the seat to rotate and tilt to the left and me to fall to the ground.
This chair therefore presents a danger: risk of falling due to the breakage of the seat slides.
These slides are made of bakelite (hard plastic) and for the price, the manufacturer could have put steel slides, which do not break suddenly, and do not present a danger to the user!
Otherwise, apart from this problem and what has been said by others about the useless headrest (too far back), the backrest and armrests tend to get loose in professional use.
After 18 months of professional use, I strongly advise against this model and even this manufacturer. Indeed, for the price, one has the right to expect something other than a piece of junk from Ikea.