Pretty easy to assemble. This chair is ultra comfortable with nice head and neck support. My wife liked it so much I bought one for her for the kitchen table in place of her kitchen chair. You won't regret buying this chair!
I purchased two of these chairs and have had no issues as of yet. My favorite feature on the chair is the adjustable head/neck rest. I also like the sliding adjustable lumbar pad that can be moved up or down slightly to make sitting in the chair more ergonomically correct depending on your posture. I love that the arm rests go up for a better comfort at a desk or work station and go down to fit under a desk or work station. Overall a good chair as with other reviews with the duration of comfort "GET UP AND TAKE A WALK" every now and again. It is not good for anyone to sit for long periods of time they will probably find that no chair can accommodate that comfort level.
I am extremely happy with this chair. I have disc issues and have had difficulty getting a comfortable chair. This one has been perfect with great support. The mesh keeps me cool in the summer and the arm and head rests are adjustable. I found it very easy to assemble.