Easy assembly just BE SURE to tighten loosely the arms before attempting to install the back of the chair otherwise you'll have to loosen the arms further so the arms can be moved sufficiently to attach the back. The chair is very comfortable. It was out of stock at my local store and could not be delivered to the store for pickup but delivery was next day to my home Fortunately I was home to accept delivery.
After sitting in the chair on the floor at the local Staples I knew this would be the chair for me!! It's comfortable but adequately supports my back and posture; and I can adjust the height and armrests exactly as I need them in relation to my work station! I highly recommend this chair for its comfort and versatility!! However with regard to it's assembly while the pictorial assembly instructions were very easy to follow I highly recommend the addition of two additional "Tips" to the instructions: (1) TWO people are recommended to assemble the chair ESPECIALLY when seating the chair onto the center post and when attempting to position the seat back between the armrests and fasten the seat back at the initial lower screw openings. (2) Do NOT FULLY TIGHTEN the four (4) screws fastening the armrests to the seat until AFTER you position and fasten the seat back -- otherwise it'll be nearly impossible to squeeze the seat back between the arm rests and align it with the lower screw holes!
I am very pleased with this purchase. Very well made easy to assemble. Feels just right to me and I am in it many hours a day. No back fatigue no butt fatigue. Very pleased.