Really unstable chair at the sitting.
The central piston does not bind but connects to the end on the chair, suddenly there is a lot of play, this makes the unstable and uncomfortable sitting at will.
Often being at my computer I already feel the pain in the buttocks, back of thighs and back (sciatica).
I'm not even talking about that twist arms if you press it (I only 83kg) and pseudo cushion for lumbar which will already be in raplapla even 1am.
Indeed casters are provided castors for soft floors .... hard to predict for soil and it rolls ... (Available from the same seller Hjh 619006 Office 5 castors for Hard Floors Head Office 11 mm / 50 mm)
I absolutely do not understand the positive reviews for this item.
Certainly it is not expensive but do not plan to stay more than an hour over ...
I also want to emphasize that when receiving the package that it really was not tidy but everything loose in the carton.
1 solution for improved comfort Recharge buy gasoline Zippo Brushed Chrome Zippo Lighter + Z200et Burn ...