Assembly was challenging. My advice don’t tighten up all the arm fasteners until the back of the chair has been fastened. You’ll need some wiggle room to set the back of the chair to align with its fasteners. Otherwise the chair once assembled is very comfortable and the movable arms allow me to slide under my desk without marring up the desk finish.
It took my over 1.5 to partially assemble the chair and still not done as user instructions are not user friendly as they only provide pictures with no wording on step by step instructions; not happy with this manufacturer
After putting it together and all went together easily. I use it in my home office area. I like that the arms rests flip up high enough that I can slide out of the chair without being attacked by the arm rests. Comfortable and easy rolling even on carpet.