1. assembly... the way they get around holes not lining up is one side is a hole and the other is a slot but the washers included were to small for the job and just fell thru the slot causing me to make a trip to the hardware store to purchase the proper size.
2.armrests... the armrests are near rock hard and are very wiggly.
3.overview... the chair was supposed to have a seat angle adjustment and synchro tilt functions. it had neither. in fact i doubt any of the comparably priced inbox zero brand chairs have these functions although they all claim to have them.
4.summary...this chair is not what it claims to be and i would not buy it again. in fact i doubt i will ever use wayfair again after this experience!