Very comfortable easy to customize to your comfort. I chose to build mine. I took my time it took about 30 minutes and instructions were straightforward. You do have to lift the chair over the base. Encourages good ergo. My back and shoulders are thanking me for this purchase.
This chair is great for the price. I needed lumbar support and adjustable arms. Sat in chairs at the store and decided on this model with headrest. Bought it in line and saved money. Assembly was easy enough. I did use my own hardwood safe wheels. I highly recommend this chair for the price. Hard to beat.